ECOLAB INC
10-Q, 1998-08-12
SOAP, DETERGENTS, CLEANG PREPARATIONS, PERFUMES, COSMETICS
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<PAGE>

                                   FORM 10-Q

                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C.  20549


(Mark One)

[ X ]  QUARTERLY REPORT PURSUANT TO SECTION 13 or 15(d) OF THE
          SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 1998

                                       OR

[  ]  TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE
          SECURITIES EXCHANGE ACT OF 1934

For the transition period from                to               
                               --------------    --------------

Commission File No. 1-9328
                   -------

                                  ECOLAB INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

         Delaware                                             41-0231510
- --------------------------------------------------------------------------------
(State or other jurisdiction of                            (I.R.S. Employer
incorporation or organization)                             Identification No.)

        Ecolab Center, 370 Wabasha Street N., St. Paul, Minnesota 55102
- --------------------------------------------------------------------------------
               (Address of principal executive offices)(Zip Code)

                                  651-293-2233
                                  ------------
              (Registrant's telephone number, including area code)

                                (Not Applicable)
- --------------------------------------------------------------------------------
      (Former name, former address and former fiscal year, if changed
                               since last report)


Indicate by check mark whether the registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 
1934 during the preceding 12 months (or for such shorter period that the 
registrant was required to file such reports), and (2) has been subject to 
such filing requirements for the past 90 days.

Yes   X        No       
   -------        -------

Indicate the number of shares outstanding of each of the issuer's classes of 
common stock, as of July 31, 1998.

129,641,053 shares of common stock, par value $1.00 per share.
- -----------

<PAGE>

                         PART I - FINANCIAL INFORMATION

                                  ECOLAB INC.
                        CONSOLIDATED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                    Second Quarter Ended
                                                          June 30
(thousands, except per share)                    1998                1997
                                               --------            --------
                                                        (unaudited)
<S>                                            <C>                 <C>

Net Sales                                      $468,460            $411,810

Cost of Sales                                   210,116             183,322

Selling, General 
  and Administrative Expenses                   194,604             175,685
                                               --------            --------

Operating Income                                 63,740              52,803

Interest Expense, Net                             5,400               3,054
                                               --------            --------

Income Before Income Taxes
  and Equity in Earnings of 
  Joint Venture                                  58,340              49,749

Provision for Income Taxes                       24,475              20,397

Equity in Earnings of Henkel-Ecolab
  Joint Venture                                   3,824               3,542
                                               --------            --------

Net Income                                     $ 37,689            $ 32,894
                                               --------            --------
                                               --------            --------
Net Income Per Common Share
     Basic                                     $   0.29            $   0.25
     Diluted                                   $   0.28            $   0.25

Dividends Per Common Share                     $  0.095            $   0.08

Weighted Average Common Shares Outstanding
     Basic                                      128,667             129,779
     Diluted                                    133,803             133,963
</TABLE>

                  See notes to consolidated financial statements.


                                       2

<PAGE>

                                  ECOLAB INC.
                       CONSOLIDATED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                        Six Months Ended       Year Ended
                                            June 30            December 31
                                    -----------------------    -----------
(thousands, except per share)         1998           1997          1997
                                    ---------      --------    -----------
                                           (unaudited)
<S>                                 <C>            <C>          <C>
Net Sales                           $904,822       $785,570     $1,640,352

Cost of Sales                        406,025        349,048        722,084

Selling, General 
  and Administrative Expenses        381,337        340,289        699,764
                                    ---------      --------    -----------

Operating Income                     117,460         96,233        218,504

Interest Expense, Net                 10,806          6,052         12,637
                                    ---------      --------    -----------

Income Before Income Taxes
  and Equity in Earnings of 
  Joint Venture                      106,654         90,181        205,867

Provision for Income Taxes            44,764         36,974         85,345

Equity in Earnings of
  Henkel-Ecolab Joint Venture          6,387          5,891         13,433
                                    ---------      --------    -----------


Net Income                          $ 68,277       $ 59,098     $  133,955
                                    ---------      --------    -----------
                                    ---------      --------    -----------

Net Income Per Common Share
     Basic                          $   0.53       $   0.46     $     1.03
     Diluted                        $   0.51       $   0.44     $     1.00

Dividends Per Common Share          $   0.19       $   0.16     $    0.335

Weighted Average Common Shares 
 Outstanding
     Basic                           128,813        129,664        129,446
     Diluted                         133,871        133,762        133,822
</TABLE>

                See notes to consolidated financial statements.


                                       3

<PAGE>

                                  ECOLAB INC.
                          CONSOLIDATED BALANCE SHEET

<TABLE>
<CAPTION>
                                   June 30        June 30      December 31
(thousands)                          1998           1997           1997   
                                  -----------    ----------    -----------
                                         (unaudited)
<S>                               <C>            <C>           <C>        
ASSETS

Cash and cash equivalents         $   27,242     $   70,550     $   61,169

Accounts receivable, net             247,783        217,550        246,041

Inventories                          153,275        130,211        154,831
 
Deferred income taxes                 35,175         29,227         34,978

Other current assets                  35,794          8,145         12,482
                                  -----------    ----------    -----------

Current Assets                       499,269        455,683        509,501


Property, Plant and  
  Equipment, Net                     396,458        342,984        395,562


Investment in Henkel-Ecolab 
  Joint Venture                      233,903        248,297        239,879


Other Assets                         269,181        161,410        271,357
                                  -----------    ----------    -----------

Total Assets                      $1,398,811     $1,208,374     $1,416,299
                                  -----------    ----------    -----------
                                  -----------    ----------    -----------
</TABLE>

               See notes to consolidated financial statements.

                                  (Continued)

                                       4

<PAGE>

                                  ECOLAB INC.
                    CONSOLIDATED BALANCE SHEET (Continued)

<TABLE>
<CAPTION>

                                  
(thousands, except per share)      June 30        June 30      December 31 
                                     1998           1997           1997    
                                  ----------     ----------    ----------- 
                                        (unaudited)
LIABILITIES AND SHAREHOLDERS' EQUITY

<S>                               <C>            <C>           <C>         
Short-term debt                   $   88,789     $   29,638     $   48,884

Accounts payable                     116,684        100,623        130,682

Compensation and benefits             66,478         62,322         74,317
 
Income taxes                           8,973         15,036         13,506

Other current liabilities            131,836        115,714        137,075
                                  ----------     ----------    ----------- 

Current Liabilities                  412,760        323,333        404,464


Long-Term Debt                       240,382        149,196        259,384


Postretirement Health Care
  and Pension Benefits                88,856         82,591         76,109

Other Liabilities                     89,705        121,290        124,641


Shareholders' Equity (common stock,
  par value $1.00 per share; 
  shares outstanding:  June 30,
  1998 - 128,650; June 30, 1997
  - 129,783; December 31, 1997
  - 129,127)                         567,108        531,964        551,701
                                 -----------     ----------    ----------- 

Total Liabilities and 
  Shareholders' Equity            $1,398,811     $1,208,374     $1,416,299
                                 -----------     ----------    ----------- 
                                 -----------     ----------    ----------- 
</TABLE>

               See notes to consolidated financial statements.
                                          
                                       5

<PAGE>
                                          
                                  ECOLAB INC.
                     CONSOLIDATED STATEMENT OF CASH FLOWS

<TABLE>
<CAPTION>
                                                      Six Months Ended      Year Ended
                                                           June 30          December 31
(thousands)                                          1998           1997       1997
                                                   --------       --------   --------
                                                         (unaudited)
<S>                                                <C>            <C>        <C>
OPERATING ACTIVITIES

Net income                                         $ 68,277       $ 59,098   $133,955

Adjustments to reconcile net
 income to cash provided by
 operating activities:
  Depreciation                                       47,575         42,674     84,415
  Amortization                                       10,965          7,431     16,464
  Deferred income taxes                                (318)          (430)    (2,074)
     Equity in earnings of joint venture             (6,387)        (5,891)   (13,433)
  Joint venture royalties and dividends               7,241         15,546     25,367
  Other, net                                            766            628      4,630
  Changes in operating assets and 
   liabilities:                                            
    Accounts receivable                              (3,670)       (10,009)   (21,231)
    Inventories                                        (607)        (6,306)   (14,395)
    Other assets                                     (4,304)        (5,645)   (10,993)
    Accounts payable                                (14,016)        (3,608)    20,876
    Other liabilities                                (4,659)       (13,030)    11,517
                                                   --------       --------   --------
Cash provided by continuing operations              100,863         80,458    235,098

Cash used for discontinued operations               (30,200)             
                                                   --------       --------   --------
Cash provided by operating activities              $ 70,663       $ 80,458   $235,098
                                                   --------       --------   --------
</TABLE>

                  Bracketed amounts indicate a use of cash.

               See notes to consolidated financial statements.

                                  (Continued)


                                       6

<PAGE>

                                  ECOLAB INC.
               CONSOLIDATED STATEMENT OF CASH FLOWS (Continued)

<TABLE>
<CAPTION>
                                        Six Months Ended        Year Ended
                                             June 30           December 31
                                       1997          1998          1997 
                                     --------      --------    -----------
(thousands)                               (unaudited)
<S>                                  <C>           <C>         <C>
INVESTING ACTIVITIES

Capital expenditures                 $(68,172)     $(54,435)    $ (121,667)
Property disposals                      1,571         1,197          3,424
Businesses acquired                   (27,766)      (12,974)      (157,234)
Sale of investments in securities       5,000
Other, net                               (139)         (235)        (1,240)
                                     --------      --------    -----------
Cash used for investing activities    (89,506)      (66,447)      (276,717)
                                     --------      --------    -----------

FINANCING ACTIVITIES

Notes payable                          39,543         2,395          9,280
Long-term debt borrowings              16,940         1,000        117,000
Long-term debt repayments             (22,540)         (470)       (15,210)
Reacquired shares                     (26,281)      (14,145)       (60,795)
Cash dividends on commmon stock       (24,491)      (20,727)       (41,456)
Other, net                              3,323        19,051         26,278
                                     --------      --------    -----------
Cash provided by (used for) 
  financing activities                (13,506)      (12,896)        35,097
                                     --------      --------    -----------
Effect of exchange rate 
  changes on cash                      (1,578)          160         (1,584)
                                     --------      --------    -----------

INCREASE (DECREASE) IN CASH AND
  CASH EQUIVALENTS                    (33,927)        1,275         (8,106)

Cash and Cash Equivalents, 
  at beginning of period               61,169        69,275         69,275
                                     --------      --------    -----------
Cash and Cash Equivalents, 
  at end of period                   $ 27,242      $ 70,550      $  61,169
                                     --------      --------    -----------
                                     --------      --------    -----------
</TABLE>

                  Bracketed amounts indicate a use of cash.
                                          
               See notes to consolidated financial statements.
                                          
                                       7

<PAGE>

                                  ECOLAB INC.
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

CONSOLIDATED FINANCIAL STATEMENTS

The unaudited consolidated statements of income for the second quarter and 
the six months ended June 30, 1998 and 1997, reflect, in the opinion of 
management, all adjustments necessary for a fair statement of the results of 
operations for the interim periods.  These adjustments consist of normal, 
recurring items.  The results of operations for any interim period are not 
necessarily indicative of results for the full year.  The consolidated 
balance sheet data as of December 31, 1997 and the related consolidated 
statements of income and cash flows data for the year then ended were derived 
from audited consolidated financial statements, but do not include all 
disclosures required by generally accepted accounting principles.  The 
unaudited consolidated financial statements should be read in conjunction 
with the financial statements and notes thereto incorporated in the Company's 
Annual Report on Form 10-K for the year ended December 31, 1997.  
PricewaterhouseCoopers LLP, the Company's independent accountants, have 
performed a limited review of the interim financial information included 
herein.  Their report on such review accompanies this filing.

BALANCE SHEET INFORMATION

<TABLE>
<CAPTION>
                                               June 30        June 30      December 31
                                                1998           1997            1997
(thousands)                                   ---------      ---------     -----------
                                                    (unaudited)
<S>                                           <C>            <C>           <C>
Accounts Receivable, Net
     Accounts receivable                      $ 259,420      $ 227,460      $ 256,919
     Allowance for doubtful accounts            (11,637)        (9,910)       (10,878)
                                              ---------      ---------     -----------
     Total                                    $ 247,783      $ 217,550      $ 246,041
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------


Inventories
     Finished goods                           $  62,793      $  53,782      $  67,823
     Raw materials and parts                     93,287         79,794         89,716
     Excess of fifo cost over lifo cost          (2,805)        (3,365)        (2,708)
                                              ---------      ---------     -----------
     Total                                    $ 153,275      $ 130,211      $ 154,831
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------

Property, Plant and Equipment, Net
  Land                                        $  11,980      $   8,257      $  18,184
  Buildings and leaseholds                      148,478        133,499        145,021
  Machinery and equipment                       250,662        217,508        232,940
  Merchandising equipment                       405,995        351,801        379,531
  Construction in progress                       16,248          9,818         19,862
                                              ---------      ---------     -----------
                                                833,363        720,883        795,538
  Accumulated depreciation
     and amortization                          (436,905)      (377,899)      (399,976)
                                              ---------      ---------     -----------
     Total                                    $ 396,458      $ 342,984      $ 395,562
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------
</TABLE>


                                       8

<PAGE>

                                  ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

BALANCE SHEET INFORMATION (Continued)

<TABLE>
<CAPTION>
                                               June 30        June 30      December 31
                                                1998           1997           1997
(thousands)                                   ---------      ---------     -----------
                                                      (unaudited)
<S>                                           <C>            <C>           <C>
Other Assets
  Intangible assets, net                      $ 214,864      $ 102,965      $ 217,120
  Investments in securities                                      5,000          5,000
  Deferred income taxes                          25,237         26,591         23,444
  Other                                          29,080         26,854         25,793
                                              ---------      ---------     -----------
     Total                                    $ 269,181      $ 161,410      $ 271,357
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------
Short-Term Debt
  Notes payable                               $  73,014      $  14,363      $  33,440
  Long-term debt, current 
     maturities                                  15,775         15,275         15,444
                                              ---------      ---------     -----------
     Total                                    $  88,789      $  29,638      $  48,884
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------
Shareholders' Equity
  Common stock                                $ 143,210      $  71,199      $ 142,797
  Additional paid-in capital                    155,457        193,984        149,137
  Retained earnings                             538,796        443,016        494,950
  Deferred compensation                          (7,235)        (6,027)        (9,160)
  Cumulative translation                        (39,691)       (14,406)       (28,943)
  Treasury stock                               (223,429)      (155,802)      (197,080)
                                              ---------      ---------     -----------
     Total                                    $ 567,108      $ 531,964      $ 551,701
                                              ---------      ---------     -----------
                                              ---------      ---------     -----------
</TABLE>

Interest expense related to all debt was $12,581,000 and $8,500,000 for the 
six months ended June 30, 1998 and 1997, respectively, and $18,043,000 for 
the year ended December 31, 1997.

Other noncurrent liabilities decreased from $125 million at year-end 1997 to 
$90 million at June 30, 1998 principally due to a deposit made to post a bond 
with the Internal Revenue Service against outstanding issues related to the 
disposal of a discontinued business in 1992.


                                       9

<PAGE>

                                  ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

BUSINESS ACQUISITIONS

GIBSON BUSINESS ACQUISITION

In October 1997, the Company made a public tender offer for all of the 
outstanding stock of Gibson Chemical Industries Limited (Gibson) located in 
Melbourne, Australia.  Gibson is a manufacturer and marketer of cleaning and 
sanitizing products, primarily for the Australian and New Zealand 
institutional, healthcare and industrial markets.  On November 5, 1997, the 
Company waived all of the remaining conditions to its tender offer and, 
effective November 30, 1997, had acquired substantially all of the 
outstanding Gibson shares.

During the first quarter of 1998, the Company completed its plan for 
integration of the Gibson businesses, including the determination of which of 
the acquired businesses will not be retained, and decisions related to 
certain duplicate facilities.  The net assets related to these businesses and 
facilities which are being held for sale totaled approximately $25 million 
and were reclassified to other current assets at March 31, 1998.

The acquisition was accounted for as a purchase.  The purchase price of the 
shares and the direct costs of the transaction totaled approximately $130 
million and were financed through the Company's Multicurrency Credit 
Agreement. The excess of the purchase price over the tangible net assets 
acquired was approximately $85 million and is being amortized on a 
straight-line basis over an average useful life of 25 years. The Company's 
international subsidiaries are included in the financial statements on the 
basis of their November 30 fiscal year ends and, therefore, Gibson's 
operations were included in the Company's consolidated statement of income 
beginning in the 1998 reporting period.  The assets acquired and the 
liabilities assumed in the transaction were included in the Company's 
consolidated balance sheet as of the November 30 effective date.

The following unaudited pro forma financial information reflects the combined 
results of the Company and the retained Gibson businesses assuming the 
acquisition had occurred at the beginning of 1997.  Pro forma adjustments 
have been included to give effect to amortization of the excess of the 
purchase price over the tangible net assets acquired, interest expense on 
debt incurred to finance the acquisition and the related income tax effects.  
The Company expects that certain efficiencies and synergies will result from 
the business combination, however, in accordance with the pro forma 
adjustment guidelines, these anticipated cost savings have not been reflected 
in the information shown below.

<TABLE>
<CAPTION>
                                                             Year Ended
                                                            December 31
               (thousands, except per share)                    1997
                                                            -----------
               <S>                                          <C>
               Net sales                                     $1,741,006
               Net income                                       131,455
               Diluted net income per common share           $     0.98
</TABLE>


                                      10

<PAGE>

                                  ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

BUSINESS ACQUISITIONS (continued)

GIBSON BUSINESS ACQUISITION (continued)

The pro forma results are presented for information purposes only and are not 
necessarily indicative of the results of operations which actually would have 
resulted had the combination occurred at the beginning of 1997 or of future 
results of operations of the consolidated businesses.

OTHER BUSINESS ACQUISITIONS

At the beginning of the first quarter of 1998, the Company acquired a 
cleaning and sanitizing business in Japan from Henkel KGaA.  Sales of the 
acquired business were approximately $10 million in 1997.

In June 1998, the Company acquired certain assets of American Fluid 
Technologies (AFT) which is based in Hopkins, Minnesota.  AFT provides 
cleaning and optimization products and services for membrane systems used to 
process water for food, beverage, pharmaceutical and industrial applications. 
 AFT has become part of the Company's Food & Beverage division.  AFT sales 
were approximately $3 million in 1997.

Also in June 1998, the Company acquired certain assets of Puremark 
International, a Fairfield, New Jersey-based manufacturer of systems which 
help purify and condition water used in food service soda fountain 
dispensers, ice makers, coffee makers and similar items.  The acquired 
businesses had sales of approximately $2 million in 1997, and have become 
part of the Company's Institutional division.

Subsequent to the end of the second quarter, in July 1998, the Company 
completed the purchase of GCS Service, Inc., a Danbury, Connecticut-based 
provider of commercial kitchen equipment repair services.  GCS Service, Inc. 
sales were $48 million in 1997.

These acquisitions have been accounted for as purchases and, accordingly, the 
results of operations have been included in the financial statements of the 
Company from the dates of acquisition.  Net sales and operating income of 
these businesses are not significant to the Company's consolidated results of 
operations, financial position and cash flows.


                                      11

<PAGE>

                                 ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

COMPREHENSIVE INCOME

In the first quarter of 1998, the Company adopted Statement of Financial 
Accounting Standards No. 130, "Reporting Comprehensive Income."  The standard 
requires the display and reporting of comprehensive income, which includes 
all changes in shareholders' equity with the exception of additional 
investments by shareholders or distributions to shareholders.  Comprehensive 
income for the Company includes net income and foreign currency translation 
that is charged or credited to the cumulative translation account within 
shareholders' equity. Comprehensive income for the second quarter and six 
months ended June 30, 1998 and 1997 and the year ended December 31, 1997, was 
as follows:

<TABLE>
<CAPTION>
                                      Second Quarter                 Six Months              Year
                                          Ended                         Ended                Ended
                                         June 30                       June 30            December 31
(thousands)                       1998            1997          1998           1997           1997
                                 -------        -------       --------       --------     -----------
                                       (unaudited)                  (unaudited)
<S>                              <C>            <C>           <C>            <C>          <C>
Net income                       $37,689        $32,894       $ 68,277       $ 59,098       $133,955

Change in cumulative
     translation                  (2,200)        (1,269)       (10,748)       (21,193)       (35,730)
                                 -------        -------       --------       --------     -----------

Comprehensive income             $35,489        $31,625       $ 57,529       $ 37,905       $ 98,225
                                 -------        -------       --------       --------     -----------
                                 -------        -------       --------       --------     -----------
</TABLE>

NET INCOME PER COMMON SHARE

The computation of the basic and diluted per share amounts were as follows:

<TABLE>
<CAPTION>
                                     Second Quarter                  Six Months             Year
                                         Ended                         Ended                Ended
(thousands,                             June 30                       June 30            December 31
 except per share)                1998           1997           1998           1997          1997  
                                --------       --------       --------       --------    -----------
                                       (unaudited)                  (unaudited)
<S>                             <C>            <C>            <C>            <C>         <C>
Net income                      $ 37,689       $ 32,894       $ 68,277       $ 59,098       $133,955
                                --------       --------       --------       --------    -----------
                                --------       --------       --------       --------    -----------
Weighted average
 common shares 
 outstanding
     Basic (actual
     shares outstanding)         128,667        129,779        128,813        129,664        129,446
     Effect of dilutive
     stock options                 5,136          4,184          5,058          4,098          4,376
                                --------       --------       --------       --------    -----------
     Diluted                     133,803        133,963        133,871        133,762        133,822
                                --------       --------       --------       --------    -----------
                                --------       --------       --------       --------    -----------
Net income per
 common share
     Basic                         $0.29          $0.25          $0.53          $0.46          $1.03
     Diluted                       $0.28          $0.25          $0.51          $0.44          $1.00
</TABLE>


                                      12

<PAGE>

                                 ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

NET INCOME PER COMMON SHARE (continued)

Stock options for approximately 2.3 million shares were granted in 1998 with 
exercise prices substantially greater than the market value of the Company's 
common stock.  These stock options were not dilutive and therefore were not 
included in the computation of diluted net income per common share for the 
second quarter and six months ended June 30, 1998.  Virtually all stock 
options outstanding during the second quarter and six months ended June 30, 
1997, and the year ended December 31, 1997, were dilutive and included in the 
calculation of the diluted per share amounts.

GEOGRAPHIC SEGMENTS

The Company is the leading global developer and marketer of premium cleaning, 
sanitizing and maintenance products and services for the hospitality, 
institutional and industrial markets.  Customers include hotels and 
restaurants; foodservice, healthcare and educational facilities; quickservice 
(fast-food) units; commercial laundries; light industry; dairy plants and 
farms; and food and beverage processors around the world.  International 
consists of Canadian, Asia Pacific, Latin American, African and Kay's 
international operations.  In addition, the Company and Henkel KGaA of 
Dusseldorf, Germany, each have a 50% economic interest in the Henkel-Ecolab 
joint venture, which operates institutional and industrial cleaning and 
sanitizing businesses in Europe. Information concerning the Company's equity 
in earnings of the Henkel-Ecolab joint venture is provided in a separate note 
to the consolidated financial statements. 

<TABLE>
<CAPTION>

                                  Second Quarter Ended             Six Months Ended      Year Ended
                                        June 30                         June 30          December 31
(thousands)                       1998           1997           1998           1997          1997
                                --------       --------       --------       --------     ----------
                                      (unaudited)                   (unaudited)
<S>                             <C>            <C>            <C>            <C>          <C>
Net Sales
  United States                 $359,254       $319,633       $691,868       $610,336     $1,275,828
  International                  109,206         92,177        212,954        175,234        364,524
                                --------       --------       --------       --------     ----------
     Total                      $468,460       $411,810       $904,822       $785,570     $1,640,352
                                --------       --------       --------       --------     ----------
                                --------       --------       --------       --------     ----------
Operating Income  
  United States                 $ 57,369       $ 47,184       $104,905       $ 85,625     $  195,630
  International                    7,850          6,669         14,944         12,539         26,962
  Corporate                       (1,479)        (1,050)        (2,389)        (1,931)        (4,088)
                                --------       --------       --------       --------     ----------
     Total                      $ 63,740       $ 52,803       $117,460       $ 96,233     $  218,504
                                --------       --------       --------       --------     ----------
                                --------       --------       --------       --------     ----------
</TABLE>


                                      13

<PAGE>

                                 ECOLAB INC.
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

EQUITY IN EARNINGS OF HENKEL-ECOLAB JOINT VENTURE 

Certain financial data of the Henkel-Ecolab joint venture and the components 
of the Company's equity in earnings of the joint venture for the second 
quarter and six months ended June 30, 1998 and 1997 and for the year ended 
December 31, 1997 were:

<TABLE>
<CAPTION>
                                  Second Quarter Ended            Six Months Ended       Year Ended
                                        June 30                       June 30            December 31
(thousands)                       1998           1997           1998           1997         1997
                                --------       --------       --------       --------   ------------
                                      (unaudited)                    (unaudited)
<S>                             <C>            <C>            <C>            <C>        <C>
Joint venture

  Net sales                     $223,498       $212,768       $423,408       $422,365       $844,689

  Gross profit                   122,629        119,720        235,050        234,778        470,698

  Income before 
     income taxes                 16,208         15,434         28,286         27,407         63,640

  Net income                    $  9,224       $  8,924       $ 15,998       $ 15,594       $ 33,701


Ecolab equity in earnings

  Ecolab equity in 
     net income                 $  4,612       $  4,462       $  7,999       $  7,797       $ 16,851

  Ecolab royalty 
     income from joint 
     venture, net of
     income taxes                  1,112          1,085          2,196          2,220          4,583

  Amortization expense 
     for the excess of 
     cost over the 
     underlying net 
     assets of the joint
     venture                      (1,900)        (2,005)        (3,808)        (4,126)        (8,001)
                                --------       --------       --------       --------   ------------

  Equity in earnings of 
     Henkel-Ecolab 
     joint venture              $  3,824       $  3,542       $  6,387       $  5,891       $ 13,433
                                --------       --------       --------       --------   ------------
                                --------       --------       --------       --------   ------------
</TABLE>

At June 30, 1998, the Company's investment in the Henkel-Ecolab joint venture 
included approximately $139 million for the unamortized excess of the 
Company's investment over its equity in the joint venture's net assets.  This 
excess is being amortized on a straight-line basis over estimated economic 
useful lives of up to 30 years.


                                       14

<PAGE>

                                  ECOLAB INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

SUBSEQUENT EVENT

As a result of tax losses on the disposition of a business in 1992, the 
Company's U.S. federal income tax payments were reduced in 1992 through 1995 
by approximately $58 million.  However, pending final acceptance of the 
Company's treatment of the losses, no income tax benefit has been recognized 
for financial reporting purposes. On August 5, 1998 an agreement was reached 
with the Internal Revenue Service on the final tax treatment for the losses.  
This agreement will result in the recognition of  income from discontinued 
operations in the Company's financial statements for the period ending 
September 30, 1998.   Because this one-time gain relates to a previously 
discontinued business and a major portion of the tax liability due was funded 
by a deposit to post a bond with the Internal Revenue Service during the 
second quarter 1998, the settlement is not expected to have a material impact 
on the Company's overall results from continuing operations, financial 
position or liquidity.


                                      15

<PAGE>

                     REPORT OF INDEPENDENT ACCOUNTANTS


To the Shareholders and Directors
Ecolab Inc.

     We have reviewed the accompanying consolidated balance sheet of Ecolab 
Inc. as of June 30, 1998 and 1997, and the related consolidated statements of 
income for the three-month and six-month periods ended June 30, 1998 and 
1997, and the consolidated statement of cash flows for the six-month periods 
ended June 30, 1998 and 1997.  These financial statements are the 
responsibility of the Company's management.

     We conducted our reviews in accordance with standards established by the 
American Institute of Certified Public Accountants.  A review of interim 
financial information consists principally of applying analytical procedures 
to financial data and making inquiries of persons responsible for financial 
and accounting matters.  It is substantially less in scope than an audit 
conducted in accordance with generally accepted auditing standards, the 
objective of which is the expression of an opinion regarding the financial 
statements taken as a whole. Accordingly, we do not express such an opinion.

     Based on our reviews, we are not aware of any material modifications 
that should be made to the accompanying consolidated financial statements for 
them to be in conformity with generally accepted accounting principles.

     We have previously audited, in accordance with generally accepted 
auditing standards, the consolidated balance sheet as of December 31, 1997, 
and the related consolidated statements of income, shareholders' equity and 
cash flows for the year then ended (not presented herein); and in our report 
dated February 23, 1998, we expressed an unqualified opinion on those 
consolidated financial statements.  In our opinion, the information set forth 
in the accompanying consolidated balance sheet as of December 31, 1997, and 
the related consolidated statements of income and cash flows for the year 
then ended is fairly presented, in all material respects, in relation to the 
consolidated balance sheet and statements of income and cash flows from which 
it has been derived.

                                        /s/ PricewaterhouseCoopers LLP
                                        PRICEWATERHOUSECOOPERS LLP

Saint Paul, Minnesota
July 21, 1998


                                      16

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis provides information that management 
believes is useful in understanding the Company's operating results, cash 
flows and financial condition.  The discussion should be read in conjunction 
with the consolidated financial statements and related notes in this Form 
10-Q.

The following discussion contains various "Forward-Looking Statements" within 
the meaning of the Private Securities Litigation Reform Act of 1995.  The 
statements, which represent Ecolab's expectations or beliefs concerning 
various future events, are based on current expectations that involve a 
number of risks and uncertainties that could cause actual results to differ 
materially from those of such Forward-Looking Statements.  We refer readers 
to the Company's statement entitled "Forward-Looking Statements and Risk 
Factors" which is contained under Item 1 of the Company's Annual Report on 
Form 10-K for the year ended December 31, 1997.  Additional risk factors may 
be described from time to time in Ecolab's filings with the Securities and 
Exchange Commission.  

RESULTS OF OPERATIONS - SECOND QUARTER AND SIX MONTHS ENDED 
JUNE 30, 1998

Net sales for the second quarter ended June 30, 1998 were $468 million, an 
increase of 14 percent over net sales of $412 million in the second quarter 
of last year.  For the first six months of 1998, net sales increased 15% to 
$905 million from $786 in the first six months of 1997.  Business 
acquisitions made a significant contribution to the Company's sales growth 
and accounted for approximately one-half of the Company's growth in both the 
second quarter and six-month periods.  Changes in currency translation 
decreased the Company's sales growth rates by approximately two percentage 
points in each of the reporting periods.  The growth in sales also reflected 
new products, a larger sales-and-service force, new customers, competitive 
gains and a continuation of generally good conditions in the hospitality and 
lodging industries, particularly in the United States.  

The gross profit margin for the second quarter of 1998 was 55.1 percent of 
net sales, compared with the gross profit margin of 55.5 percent of net sales 
in the second quarter of last year.  For the six-month period, the gross 
profit margin was also 55.1 percent of net sales, down from the six month 
1997 margin of 55.6 percent.  These lower gross profit margins were primarily 
due to lower margins in the Asia Pacific region, which were negatively 
affected by economic and monetary problems in the area, and to businesses the 
Company added to the region


                                      17

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

RESULTS OF OPERATIONS - SECOND QUARTER AND SIX MONTHS ENDED 
JUNE 30, 1998 (continued)

through acquisitions.  The lower Asia Pacific margin was partially offset by 
modestly higher gross margins in virtually all of the Company's other 
operations which included the benefits of higher sales of the higher margin 
products of the Company's U.S. core operations and sales volume growth of new 
products.  The benefits from selling price increases improved modestly over 
last year, however, continued to be limited due to market pressures.

Selling, general and administrative expenses represented 41.5 percent of net 
sales in the second quarter of 1998, a decrease from selling, general and 
administrative expenses of 42.7 percent of net sales in the second quarter of 
last year.  For the first six months of 1998, selling, general and 
administrative expenses were 42.1 percent of net sales, compared with 43.3 
percent in the comparable period of last year.  Selling, general and 
administrative margins were down for both the Company's U.S. and 
international operations with significant decreases in the Asia Pacific 
region.  These decreases reflected benefits of tight cost controls, the 
integration of businesses acquired and strong sales growth.  These benefits 
were partially offset by investments in the sales-and-service force and 
additional business investments.  The Company expects to continue investing 
in its sales-and-service force, including investments in training and 
productivity.  

For the second quarter of 1998, net income totaled $38 million, an increase 
of 15% percent over net income of $33 million in the second quarter of last 
year. On a per share basis, diluted net income per common share increased 12 
percent to $0.28 from $0.25 in the second quarter of last year.  For the 
six-month period, net income of $68 million or $0.51 per diluted share was up 
16 percent over net income of $59 million or $0.44 per diluted share in the 
comparable period of last year.  These earnings improvements reflected 
double-digit growth in operating income, principally due to the stronger 
performances of the Company's U.S. core operations, and a higher equity in 
earnings of the Henkel-Ecolab joint venture.  Earnings were negatively 
affected by increased interest expense and income taxes compared with the 
second quarter and six-month period of last year.  

Net sales for the Company's United States operations were $359 million for 
the second quarter of 1998, an increase of 12 percent over net sales of $320 
million in the second quarter of last year.  United States sales totaled $692 
million for the first six months of 1998, up 13 percent compared with sales 
of $610 million in the comparable period of 1997.  Sales benefited from 
business acquisitions, a continuation of strong growth in the core 
Institutional and Food & Beverage operations, sales of new products, and good 
business trends in the hospitality and lodging industries.  Business 
acquisitions 


                                      18

<PAGE>

                                  ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

RESULTS OF OPERATIONS - SECOND QUARTER AND SIX MONTHS ENDED 
JUNE 30, 1998 (continued)

accounted for approximately one-third of the growth in U.S. sales during each 
of the reporting periods.  Selling price increases continued to be limited 
due to tight pricing conditions in several of the markets in which the 
Company does business.  Sales of the U.S. Institutional Division increased 
11% for the second quarter and 13% for the first six months of 1998 with 
strong growth in sales of all of its business units, and the benefits of the 
December 1997 acquisition of the Grace-Lee Vehicle Wash business which added 
approximately 2 percentage points to the Division's sales growth rates. The 
Pest Elimination Division reported an improved sales growth rate of 16 
percent for the second quarter of 1998 and a 14 percent growth rate for the 
first six months of 1998.  Pest Elimination sales reflected good new contract 
sales, high retention of key customers and increased demand related to last 
winter's mild weather.  Kay also reported an improved trend in its sales 
growth rate with a 10 percent increase in sales for the second quarter and a 
9 percent growth rate for the first six months of 1998.  Kay's growth 
reflected good results in sales to its core quickservice customers, due in 
part to new product and service offerings, and good growth in sales of its 
grocery/deli business.  Sales of the Textile Care Division were down 1 
percent for the second quarter and increased 2 percent for the first six 
months of 1998.  Textile Care continues to experience pressures from plant 
consolidations, particularly in laundries serving the healthcare market, and 
challenging market conditions.  Professional Products sales increased 4 
percent for the second quarter and 7 percent for the six-month period with 
continued growth in sales of branded products through its mass commercial 
distribution line.  Water Care sales were up 4 percent for the second quarter 
and 3 percent for the six-month period.  The Water Care Division continues to 
concentrate on the hospitality, cruise ship, food and beverage, and laundry 
markets.  The Company's Food & Beverage Division reported sales growth of 15 
percent for the second quarter and 16 percent for the first half of 1998 
reflecting the acquisition of Chemidyne in August of last year.  Excluding 
Chemidyne, Food & Beverage sales increased 6 percent for the second quarter 
and 7 percent for the six-month period with good growth in sales to all of 
its markets.

For the second quarter of 1998, operating income of the Company's United 
States operations was $57 million, up 22 percent over operating income of $47 
million in the second quarter of last year.  For the six-month period, U.S. 
operating income totaled $105 million, an increase of 23 percent over 
operating income of $86 million in the comparable period of 1997.  U.S. 
operating income benefited from particularly good growth in the core 
Institutional and Food and Beverage operations and also in the Pest 
Elimination business. U.S. operating income improved to 16.0 percent of net 
sales in the second quarter from 14.8 percent of net sales in the second 
quarter of 1997.


                                      19

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

RESULTS OF OPERATIONS - SECOND QUARTER AND SIX MONTHS ENDED 
JUNE 30, 1998 (continued)

The U.S. operating income margin also improved for the first six months of 
1998, to 15.2 percent of net sales from 14.0 percent in the comparable period 
of last year.  The improvements in operating income margins reflected strong 
sales growth, sales of new products, modest increases in raw material costs, 
higher gross margins and the benefits of tight cost controls. 

Reported sales of the Company's International Operations were $109 million 
for the second quarter of 1998, an increase of 18 percent over sales of $92 
million in the comparable period of last year.  For the first six months of 
1998, International reported a sales increase of 22 percent to $213 million 
from $175 million in the first half of 1997.  International sales benefited 
from business acquisitions, however, were negatively affected by changes in 
currency translation, particularly in the Asia Pacific region.  Excluding 
acquisitions, sales for the second quarter and six-month periods as reported 
in U.S. dollars were flat versus the same periods of last year.  When 
measured in local currencies, total International sales increased 
approximately 30 percent for each of the reporting periods, and when 
acquisitions are excluded, sales for both the second quarter and first six 
months of 1998 increased approximately 10%.  The Asia Pacific region reported 
U.S. dollar sales growth of 33 percent for the second quarter and 35 percent 
for the first six months of 1998. Excluding business acquisitions and when 
measured in local currencies, Asia Pacific sales increased 15 percent for the 
second quarter of 1998 and 17 percent for the six-month period with good 
growth in Japan, Australia and Southeast Asia.  Reported sales of Latin 
America increased 4 percent for both the second quarter and six-month 
periods.  When measured in local currencies, Latin America sales increased 10 
percent in each period with strong double-digit growth in Mexico, Venezuela 
and Central America and modest growth in Brazil.  Canada's reported sales 
were flat for the second quarter of 1998 and grew 5 percent for the six-month 
period.  Canada's local currency growth, excluding the March 1997 acquisition 
of Savolite, was 4 percent for the second quarter and 6 percent for the first 
six months of 1998 and reflected good growth in Institutional and Food & 
Beverage sales.  

International reported operating income of $8 million for the second quarter 
ended June 30, 1998, an increase of 18 percent over second quarter 1997 
operating income of $7 million.  For the six-month period, International's 
reported operating income totaled $15 million and was up 19 percent over 
operating income of $13 million in the comparable period of 1997.  Excluding 
the effects of business acquisitions, International's U.S. dollar operating 
income was down 12 percent for the second quarter and down 1 percent for the 
first six months of 1998, reflecting lower income in the Asia Pacific region 
due 


                                      20

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

RESULTS OF OPERATIONS - SECOND QUARTER AND SIX MONTHS ENDED 
JUNE 30, 1998 (continued)

to the difficult business and economic conditions in the region.  Excluding 
business acquisitions and the negative effects of currency translation, 
International's operating income grew 8 percent for the second quarter and 24 
percent for the six-month period and included significant growth in results 
of Latin America.  The Company continues to be cautious about near-term 
growth in the Asia Pacific region due to the uncertain economic conditions in 
the region.  

The Company's equity in earnings of the Henkel-Ecolab joint venture increased 
8 percent to $3.8 million in the second quarter of 1998 from $3.5 million in 
the second quarter of last year.  For the first six months of 1998, the 
Company's equity in joint venture earnings was $6.4 million, up 8 percent over 
$5.9 million of equity in earnings recorded in the comparable period of last 
year.  Joint venture sales, although not consolidated in the Company's 
financial statements, increased 11 percent for the second quarter and 9 
percent for the six-month period when measured in Deutsche marks, with good 
growth in most markets and within most geographic regions.  However, sales to 
the professional hygiene market and sales in Germany and the United Kingdom 
were weak, due in part to government and private spending cutbacks.  When 
measured in U.S. dollars, joint venture sales were negatively affected by the 
strengthening U.S. dollar and increased only 5 percent for the second quarter 
and were flat for the first six months of 1998.  

Corporate operating expense was $1 million for the second quarter and $2 
million for the first half of 1998 and represented overhead costs directly 
related to the joint venture.  The major portion of the 41 percent increase 
in corporate operating expense for the second quarter was due to the timing 
of expenditures.

Net interest expense totaled $5.4 million for the second quarter and $10.8 
million for the first half of 1998 and increased nearly 80 percent over net 
interest expense in the comparable periods of last year.  The increases were 
primarily due to debt incurred under the Company's Multicurrency Credit 
Agreement for the Gibson acquisition and for an income tax deposit made in 
the second quarter of 1998.  

For both the second quarter and six-month periods, the provisions for income 
taxes reflected estimated effective rates of 42.0 percent in 1998, a slight 
increase compared with last year's effective rates of 41.0 percent.  The 
increases in the effective income tax rates were principally due to the 
effects of business acquisitions and higher overall effective rates on 
earnings of International operations.  


                                      21

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

YEAR 2000 CONVERSION

The Company has completed an assessment of Year 2000 compliance for its North 
American operations related to its critical operating and application 
systems, particularly customer-oriented systems such as sales and order 
processing, billing and collections and associated infrastructure.  As a 
result, the Company has renovated or is replacing portions of its software 
and hardware.  The renovation, validation and implementation processes are 
approximately 85% complete and the intention is to be completed by the end of 
1998 in all material respects.  The costs related to Year 2000 to complete 
this activity are not material and should not exceed $5 million, in both 
capital and expense, of which an estimated $3 million has been incurred to 
date.  Of this cost, only a small part is related to accelerated replacement 
due to Year 2000 concerns.

With regard to operations and application systems in operations outside of 
North America, the Company is in various stages of assessment, renovation, 
validation or implementation depending on the circumstances.  The Company 
intends to follow the same process internationally, as it has taken in North 
America and intends to complete the process by the end of 1998 in all 
material respects.

As a part of its Year 2000 process, the Company intends to demonstrate its 
Year 2000 readiness by simulating the Year 2000 in an orchestrated manner for 
its key infrastructure components, critical business processes and key 
application systems.  The Company expects that minor Year 2000 compliance 
issues will be identified as an outcome of the Year 2000 simulation test and 
intends to address these compliance issues in the first quarter of 1999.

On a worldwide basis, the Company is in the assessment stage relative to 
remediating its dispensing and cleaning systems and its manufacturing and 
building maintenance operations for date/time sensitivity and intends to 
proceed to the renovation, validation and implementation stages with the goal 
of completion by the end of 1998.  The Company, while still only in the 
assessment stage, believes that its requirements relative to Year 2000 
remediation for its dispensing and cleaning systems and manufacturing and 
building maintenance operations are limited in nature and although a final 
cost estimate has not been determined at this time, the Company does not 
believe the cost will be material.

The Company has contacted key suppliers and vendors in order to determine the 
status of such third parties' Year 2000 remediation plans.  This process will 
be ongoing into 1999.  In the Company's experience, its suppliers and vendors 
are still only in the process of Year 2000 renovation.  Therefore, the 
Company will be better able to fully assess the risk and prepare contingency 
plans when third party processes are more complete.


                                      22

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

YEAR 2000 CONVERSION (continued)

The Company recognizes the need for Year 2000 contingency plans in the event 
that remediation is not fully successful or that the remediation efforts of 
its vendors, suppliers and governmental/regulatory agencies are not timely 
completed.  The Company intends to address contingency planning during 1999.

The Company intends to complete its Year 2000 remediation efforts primarily 
with in-house resources, but has and will continue to use consultants for 
specific tasks.  The Company believes that costs of Year 2000 remediation 
described above can be funded from operations.

The Company recognizes that issues related to Year 2000 constitute a material 
known uncertainty.  The Company also recognizes the importance of ensuring 
its operations will not be adversely affected by Year 2000 issues.  It 
believes that the processes described above will be effective to manage the 
risks associated with the problem.  However, there can be no assurance that 
the process can be completed on the timetable described above or that the 
remediation processes will be fully effective.  The failure to identify and 
remediate Year 2000 problems or, the failure of key third parties who do 
business with the Company or governmental/regulatory agencies to timely 
remediate their Year 2000 issues could cause system failures or errors, 
business interruptions and in a worst case scenario, the inability to engage 
in normal business practices for an unknown length of time.  The effect on 
the Company's operations, income and financial condition could be materially 
adverse.

There are numerous risks and uncertainties associated with management of Year 
2000 risks and these are further discussed in the Company's Form 10-K for the 
year ended December 31, 1997 under the heading "Forward-Looking Statements 
and Risk Factors."

FINANCIAL POSITION AND LIQUIDITY

Total assets were approximately $1.4 billion at June 30, 1998, a slight 
decrease from total assets at year-end 1997 and an increase of 16 percent 
over total assets of $1.2 billion at June 30, 1997, due in part to business 
acquisitions. Other current assets at June 30, 1998, included approximately 
$23 million of net assets of the acquired Gibson businesses which the Company 
has determined it will not retain. During the first quarter of 1998 the 
Company completed its plan for the integration of Gibson and the majority of 
these net assets held for sale initially had been included in the Company's 
year-end 1997 balance sheet as property, plant and equipment, accounts 
receivable and inventories.  

Total debt was $329 million at June 30, 1998, up from total debt of $308 
million at year-end 1997 and total debt of $179 million at June 30, 1997.  
The increases in total debt reflected an income tax deposit made in the 
second quarter of 1998 and debt incurred to finance the late-1997 acquisition 
of Gibson.  The ratio of total debt to capitalization was 37 percent at June 30,
1998, compared with 36 percent at year-end 1997 and 25 percent at June 30, 1997.


                                      23

<PAGE>

                                 ECOLAB INC.
                   MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

FINANCIAL POSITION AND LIQUIDITY (continued)

Other noncurrent liabilities decreased from $125 million at year-end 1997 to 
$90 million at June 30, 1998 principally due to a deposit made to post a bond 
with the Internal Revenue Service against outstanding issues related to the 
disposal of a discontinued business in 1992.  As a result of tax losses on 
the disposition of this business, the Company's U.S. federal income tax 
payments were reduced in 1992 through 1995 by approximately $58 million.  
However, pending final acceptance of the Company's treatment of the losses, 
no income tax benefit has been recognized for financial reporting purposes.  
On August 5, 1998 an agreement was reached with the Internal Revenue Service 
on the final tax treatment for the losses.  This agreement will result in the 
recognition of income from discontinued operations in the Company's financial 
statements for the period ending September 30, 1998.  While the computations 
necessary to determine the final amount of income are dependent on many 
factors, including the outcome from the filing of numerous amended state and 
local income tax returns, the Company believes that the final amount of 
income from discontinued operations could be in excess of $35 million.  
Because this one-time gain relates to a previously discontinued business and 
the major portion of the tax liability due has been funded by the 
above-mentioned bond posting, the settlement is not expected to have a 
material impact on the Company's results from continuing operations, 
financial position or liquidity.

Cash provided by continuing operations totaled $101 million for the first six 
months of 1998, an increase of 25 percent over cash provided by continuing 
operations of $80 million in the first half of last year.  The comparison of 
cash flow from continuing operations was favorably affected by a cash outflow 
in 1997 due to an income tax deposit made against outstanding federal income 
tax issues that had been accrued for in other noncurrent liabilities.  Total 
cash provided by operating activities decreased to $71 million from $80 
million in the first six months of last year due to a $30 million income tax 
deposit made in the second quarter of 1998 related to discontinued 
operations.  

During the first six months of 1998, the Company reacquired 454,242 shares of 
its common stock under its share repurchase program, which provides shares to 
fund employee benefit plans.  The Company also acquired 432,358 shares of its 
common stock under a separate 12 million share repurchase program announced 
in May 1995.  At June 30, 1998, there were 3,748,888 shares remaining for 
purchase from time to time under that 1995 purchase authorization.  The 
Company anticipates that it will continue to periodically reacquire shares 
under these two programs.  


                                      24

<PAGE>

                                 ECOLAB INC.
                  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
          FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)

NEW ACCOUNTING PRONOUNCEMENT

In June 1998, the Financial Accounting Standards Board issued Statement of 
Financial Accounting Standards No. 133, a new standard of accounting and 
reporting for derivative instruments and hedging activities.  The Company is 
required to adopt the new standard in the first quarter of 2000.  Although 
the Company has not completed a full analysis of all of the requirements of 
the new standard, the Company's use of derivative and hedging financial 
instruments is limited and therefore the Company does not anticipate the 
impact of the new standard to be significant.


                                      25

<PAGE>

                         PART II.  OTHER INFORMATION

Item 4.     SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

            The Company's Annual Meeting of Stockholders was held on May 8,
            1998.  At the meeting, 92.57% of the outstanding shares of the
            Company's voting stock were represented in person or by proxy. 
            The first proposal voted upon was the election of four Class
            III Directors for a term ending at the annual meeting in 2001. 
            The four persons nominated by the Company's Board of Directors
            received the following votes and were elected:
<TABLE>
<CAPTION>
                 Name             For            Withheld
            ----------------  -----------        --------
            <S>               <C>                <C>
            Joel W. Johnson   118,534,635         720,980
            Philip L. Smith   118,521,653         733,962
            Hugo Uyterhoeven  118,506,599         749,016
            Albrecht Woeste   118,499,056         756,559
</TABLE>
            In addition, the terms of office of the following directors
            continued after the meeting:  Class I Directors for a term ending in
            1999 - James J. Howard, Jerry W. Levin, Rueben F. Richards, Richard
            L. Schall and Roland Schulz; and Class II Directors for a term
            ending in 2000 - Leslie S. Biller, Ruth S. Block, Allan L. Schuman
            and Michael E. Shannon.

            The second proposal voted upon was the ratification of the
            appointment of PricewaterhouseCoopers LLP (on July 1, 1998, Coopers
            & Lybrand L.L.P. merged with Price Waterhouse LLP to form
            PricewaterhouseCoopers) as the Company's independent accountants for
            the year ending December 31, 1998.  The appointment was ratified as
            follows:
<TABLE>
<CAPTION>
                    For            Against        Abstained
               -----------         -------        ---------
               <S>                 <C>            <C>
               118,916,863         173,334         165,418
</TABLE>

            As to each proposal, there were no broker non-votes.


Item 5(a)   RECENT SALES OF UNREGISTERED SECURITIES

            On May 11, 1998, the Company issued 18,633 shares of Common Stock to
            Grace-Lee Products, Incorporated ("Grace-Lee") in a private
            transaction.  The transaction represented a purchase price
            adjustment for the previously reported acquisition of Grace-Lee's
            chemical business in December, 1997.  The transaction was exempt
            from registration pursuant to Section 4(2) of the Securities Act of
            1933.


                                      26

<PAGE>

                   PART II.  OTHER INFORMATION (continued)

Item 5(b)   ANNUAL MEETING - DISCRETIONARY VOTING AND ADVANCE NOTICE PROVISIONS
 
            The following information is provided to comply with Rules 14a -
            4(c)(i) and 14a - 5(e) of the Securities and Exchange Commission:

            Rule 14(a) - 4(c)(i) of the Securities and Exchange Commission
            provides that persons named in the proxy which accompanies the
            Company's Proxy Statement, may be given discretionary authority to
            vote all proxies with respect to any matters not included in the
            Proxy Statement which come before the Annual Meeting of the
            Stockholders for a vote of the Stockholders unless advance notice of
            such matter is provided to the Company in accordance with the
            Company's Advance By-Law Notice provisions.  The Company anticipates
            continuing its policy of granting such discretionary authority to
            the persons named in the proxy.
            
            As applied to the Company such discretionary authority will apply
            with respect to proxies solicited in connection with the next Annual
            Meeting of Stockholders expected to be held on May 14, 1999, unless
            notice is received by the Company not later than February 6, 1999. 
            Notice may be given to the Secretary of the Company, c/o Ecolab
            Inc., Ecolab Center, 370 North Wabasha Street, St. Paul, Minnesota
            55102.
            
            In addition, the Company's By-Laws contain advance notice provisions
            which require that written notice of a stockholder proposal or
            stockholder director nomination not included in the Proxy Statement
            be delivered to the Secretary not less than 90 and no more than 135
            days prior to the anniversary date of the preceding Annual Meeting
            of Stockholders.  Any Stockholder business, or nomination, which the
            presiding officer determines has not been brought before the meeting
            in accordance with those By-Law provisions, will not be voted upon
            at the meeting.  The notice period, in respect of the next Annual
            Meeting expected to be held on May 14, 1999 shall be from December
            24, 1998 through February 6, 1999 inclusive.  A copy of the By-Laws
            of the Company may be obtained by contacting the Secretary of the
            Company at the above address.


                                      27

<PAGE>

                   PART II.  OTHER INFORMATION (continued)
                                          
Item 6.     EXHIBITS AND REPORTS ON FORM 8-K


            (a)     The following documents are filed as exhibits to this
                    report:

               (4) A.    Amendment No. 1 dated as of June 23, 1998 to
                         Multicurrency Credit Agreement dated as of September
                         29, 1993, as Amended and Restated as of October 17,
                         1997, and to Local Currency Addendum dated as of
                         October 17, 1997, with respect to the Multicurrency
                         Credit Agreement, among Ecolab Inc., the Banks parties
                         thereto, Citibank, N.A., as Agent for the Banks,
                         Citibank International Plc, as Euro-Agent for the Banks
                         and Morgan Guaranty Trust Company of New York as
                         Co-Agent; and with respect to the Local Currency
                         Addendum among Ecolab Inc., Ecolab PTY Limited, the
                         Local Currency Banks parties thereto, Citibank, N.A.,
                         as Agent  and Citisecurities Limited, as Local Currency
                         Agent.

                   B.    Australian Dollar Local Currency Addendum dated as of
                         June 23, 1998 among Ecolab Finance PTY Limited, Ecolab
                         Inc., Citibank, N.A., the Local Currency Agent named
                         therein and the Local Currency Banks parties thereto.

               (10) Non-Statutory Stock Option Agreement between the Company and
                    Allan L. Schuman with respect to premium-priced option grant
                    effective February 20, 1998 under the Ecolab Inc. 1997 Stock
                    Incentive Plan.  Similar option grants were made to each of
                    the named executive officers of the Company covering
                    varying, but smaller numbers of shares.

               (15) Letter regarding unaudited interim financial
                    information.

               (27) Financial Data Schedule.


            (b)     Reports on Form 8-K:

                    No reports on Form 8-K were filed during the quarter ended
                    June 30, 1998.  Subsequent to the quarter ended June 30,
                    1998, the Company filed on July 15, 1998, a Current Report
                    on Form 8-K announcing completion of its previously
                    announced acquisition of GCS Service, Inc. of Danbury,
                    Connecticut.


                                      28

<PAGE>

                                  SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the 
Registrant has duly caused this Report to be signed on its behalf by the 
undersigned thereunto duly authorized.

                                       ECOLAB INC.


Date:   August 12, 1998                By:  /s/Michael E. Shannon
                                            Michael E. Shannon
                                            Chairman of the Board, Chief 
                                            Financial and Administrative
                                            Officer (duly authorized 
                                            officer and Principal  
                                            Financial Officer)


                                      29

<PAGE>

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
     Exhibit No.                      Document                         Method of Filing
     -----------                      --------                         ----------------
     <S>             <C>                                               <C>
       (4)  A.       Amendment No. 1 dated as of June 23, 1998 to        Filed herewith
                     Multicurrency Credit Agreement dated as of          electronically
                     September 29, 1993, as Amended and Restated as
                     of October 17, 1997, and to Local Currency
                     Addendum dated as of October 17, 1997, with
                     respect to the Multicurrency Credit Agreement,
                     among Ecolab Inc., the Banks parties thereto,
                     Citibank, N.A., as Agent for the Banks,
                     Citibank International Plc, as Euro-Agent for
                     the Banks and Morgan Guaranty Trust Company of
                     New York as Co-Agent; and with respect to the
                     Local Currency Addendum among Ecolab Inc.,
                     Ecolab PTY Limited, the Local Currency Banks
                     party thereto, Citibank, N.A., as Agent  and
                     Citisecurities Limited, as Local Currency
                     Agent.

       (4)  B.       Australian Dollar Local Currency Addendum           Filed herewith
                     dated as of June 23, 1998 among Ecolab Finance      electronically
                     PTY Limited, Ecolab Inc., Citibank, N.A., the
                     Local Currency Agent named therein and the
                     Local Currency Banks party thereto.

       (10)          Non-Statutory Stock Option Agreement between        Filed herewith
                     the Company and Allan L. Schuman with respect       electronically
                     to premium-priced option grant effective
                     February 20, 1998 under the Ecolab Inc. 1997
                     Stock Incentive Plan.  Similar option grants
                     were made to each of the named executive
                     officers of the Company covering varying, but
                     smaller number of shares.

       (15)          Letter regarding unaudited interim financial        Filed herewith
                     information                                         electronically

       (27)          Financial Data Schedule                             Filed herewith
                                                                         electronically
</TABLE>


                                      30


<PAGE>


                                AMENDMENT NO. 1
                            Dated as of June 23, 1998

                                       to

                               U.S. $275,000,000 
                         MULTICURRENCY CREDIT AGREEMENT
                         Dated as of September 29, 1993

                 As Amended and Restated as of October 17, 1997

                         and to LOCAL CURRENCY ADDENDUM
                          dated as of October 17, 1997


          THIS AMENDMENT NO. 1 dated as of June 23, 1998, ("AMENDMENT") is 
entered into by and among ECOLAB INC., a Delaware corporation (the 
"COMPANY"), the banks (the "BANKS") party to  the Credit Agreement described 
below, CITIBANK, N.A. ("CITIBANK") as administrative agent (the "AGENT") for 
the Banks under the Credit Agreement, CITIBANK INTERNATIONAL PLC, as agent 
for the banks in connection with certain of the eurocurrency advances under 
the Credit Agreement (the "EURO-AGENT"), and MORGAN GUARANTY TRUST COMPANY OF 
NEW YORK,  as co-agent under the Credit Agreement (the "CO-AGENT"); and with 
respect to the Local Currency Addendum referred to below, by and among the 
Company, Ecolab PTY Limited (ACN 000 449 990) ("Ecolab PTY"), the Local 
Currency Banks party to such Local Currency Addendum (the "LOCAL CURRENCY 
BANKS"), the Agent and Citisecurities Limited (ACN 008 489 610), as local 
currency agent (the "Local Currency Agent").  Capitalized terms used herein 
and not otherwise defined herein shall have the meanings assigned to such 
terms in the Credit Agreement referred to below. 

                             PRELIMINARY STATEMENT

          A.   The Company, the Banks, the Agent, the Euro-Agent and the 
Co-Agent are parties to that certain Multicurrency Credit Agreement dated as 
of September 29, 1993, as amended and restated as of October 17, 1997 (as so 
amended and restated, the "CREDIT AGREEMENT"), pursuant to which the Banks 
have agreed to make certain loans and other financial accommodations to the 
Company and any Borrowing Subsidiary.  The Company, Ecolab PTY, the Agent, 
the Local Currency Banks and the Local Currency Agent are parties to a Local 
Currency Addendum dated as of October 17, 1997 (the "LOCAL CURRENCY 
ADDENDUM") pursuant to which the Local Currency Banks have agreed to make 
Local Currency Advances to the Company and Ecolab PTY.

<PAGE>

          B.   The Company, the Banks, the Agent, the Euro-Agent and the 
Co-Agent have agreed to amend the Credit Agreement, and the Company, Ecolab 
PTY, the Agent, the Local Currency Banks and the Local Currency Agent have 
agreed to amend the Local Currency Addendum, in each case on the terms and 
subject to the conditions hereinafter set forth.

          NOW, THEREFORE, in consideration of the premises set forth above, 
and for other good and valuable consideration, the receipt and sufficiency of 
which are hereby acknowledged, the Company, the Banks, the Agent, the 
Euro-Agent and the Co-Agent, in the case of the Credit Agreement, and the 
Company, Ecolab PTY, the Agent, the Local Currency Banks and the Local 
Currency Agent, in the case of the Local Currency Addendum, agree as follows:

          SECTION 1.  AMENDMENT TO THE CREDIT AGREEMENT.  Effective as of the 
date first above written and subject to the fulfillment of the conditions 
precedent set forth in SECTION 3, the Credit Agreement is hereby amended as 
follows:

          (a)  The definition of "Australian Local Currency Addendum" in SECTION
     1.01 is deleted and replaced by the following:

               "AUSTRALIAN LOCAL CURRENCY ADDENDUM" or "AUSTRALIAN LOCAL
          CURRENCY ADDENDA", means, as applicable, each of or both of (a) the
          Local Currency Addendum dated as of October 17, 1997 among Ecolab PTY
          Limited, the Company, the Local Currency Banks named therein, the
          Agent, and Citisecurities Limited as Local Currency Agent, and (b) the
          Local Currency Addendum dated as of June 23, 1998 among Ecolab Finance
          PTY Limited, the Company, the Local Currency Banks named therein, the
          Agent, and Citisecurities Limited as Local Currency Agent.

          (b)  SECTION 2.01(b) is amended by striking "the Australian Dollar
     Local Currency Addendum" in the first proviso in such Section, and
     substituting therefor "either Australian Local Currency Addendum".

          (c)  SECTION 2.02A(b) is amended by deleting the phrase "Except as
     provided herein," at the beginning of the third sentence of such Section,
     and substituting therefor "Except as provided herein or therein,".

          (d)  SECTION 2.04(b) is amended by inserting "17" in the blank
     following "October".

          (e)  SECTION 2.11 is amended by striking "Australian Local Currency
     Addendum" in each of the two places where it appears in the penultimate
     sentence of such Section, and 


                                     -2-

<PAGE>

     substituting "Australian Local Currency Addenda" in each such place.

          (f)  SECTION 3.01 is amended by inserting the parenthetical phrase
     "(which day shall be deemed to be June 23, 1998, in the case of Ecolab
     Finance PTY Limited)" immediately after the phrase "each dated such day"
     appearing in the first sentence of such Section.

          SECTION 2.  AMENDMENT TO LOCAL CURRENCY ADDENDUM.  Effective as of 
the date first above written and subject to the fulfillment of the conditions 
precedent set forth in SECTION 3, the Local Currency Addendum is amended as 
follows:

          (a)  SECTION 1.01 is amended by adding the following definition:

               "ECOLAB FINANCE PTY ADDENDUM" means the Local Currency Addendum
          dated as of June 23, 1998 among Ecolab Finance PTY Limited, the
          Company, the Agent, the Local Currency Banks named therein, and
          Citisecurities Limited, as the Local Currency Agent, as amended from
          time to time.

          (b)  SECTION 4.02 is amended by striking the proviso at the end of
     such Section and substituting the following therefor:

               "PROVIDED, HOWEVER, that (a) a Local Currency Bank may not assign
          any obligations, Commitments or rights hereunder to any Person that is
          not (or does not simultaneously become) (i) a Bank under the Credit
          Agreement and (ii) a Local Currency Bank under the Ecolab Finance PTY
          Addendum, and (b) such assignment shall be entered into simultaneously
          with an assignment by such Local Currency Bank to such assignee of the
          same percentage of its obligations, Commitments and rights under the
          Ecolab Finance PTY Addendum as is being assigned under this Addendum.

          (c)  The table of Local Currency Commitments on SCHEDULE I is deleted
     and the following is substituted therefor:

<TABLE>
<CAPTION>
          Local Currency Bank Name                Local Currency Commitment
          ------------------------                -------------------------
          <S>                                     <C>
          Citibank, N.A.                               US $ 53,000,000*

          Morgan Guaranty Trust Company                
            of New York                                US $ 47,000,000*
</TABLE>


                                      -3-

<PAGE>

<TABLE>
<CAPTION>
          Local Currency Bank Name                Local Currency Commitment
          ------------------------                -------------------------
          <S>                                     <C>
          The First National Bank of 
            Chicago                                    US $ 43,000,000*

          Credit Suisse First Boston                   US $ 33,000,000*

          Local Currency Facility 
          Aggregate Commitment                         US $176,000,000**
</TABLE>

          *    Less, in each case, the Local Currency Advances outstanding from
          such Local Currency Bank Under the Ecolab Finance PTY Addendum.

          **   Less the aggregate Local Currency Advances outstanding under the
          Ecolab Finance PTY Addendum.


          SECTION 3.  CONDITIONS PRECEDENT.  This Amendment shall become 
effective and shall be deemed effective as of the date first above written 
upon the satisfaction of the following conditions precedent:  

          (a) no event has occurred and is continuing which constitutes a
     Default or an Event of Default; 

          (b) receipt by the Agent of twelve (12) copies of this Amendment duly
     executed by each of the Company, the Banks, the Agent, the Euro-Agent and
     the Co-Agent;

          (c)  the Local Currency Addendum among Ecolab Finance PTY Limited, the
     Company, the Agent, the Local Currency Banks and the Local Currency Agent
     shall have been duly executed by all parties thereto and a fully executed
     copy received by the Agent;

          (d)  Ecolab Finance PTY Limited, the Company and the Agent shall have
     executed an Election to Participate and a fully executed copy thereof shall
     have been received by the Agent; and Ecolab Finance PTY Limited or the
     Company shall have delivered, or caused to be delivered, the items
     specified in SECTIONS 3.01 (c)(II), (c)(III), (d) and (f) with respect to
     Ecolab Finance PTY Limited's Election to Participate; and

          (e)  Ecolab Finance PTY Limited shall have executed and delivered the
     A Notes to be executed and delivered by it.


                                      -4-

<PAGE>

          SECTION 4.  REPRESENTATION AND WARRANTY OF THE COMPANY. In order to 
induce the Banks and the Local Currency Banks to execute and deliver this 
Amendment, (a) the Company hereby represents to the Banks and the Local 
Currency Banks that as of the date hereof, the representations and warranties 
set forth in subsections (a), (b), (c) and (d) of SECTION 4.01 of the Credit 
Agreement are true and correct and the Company is in full compliance with all 
of the terms and conditions of the Credit Agreement; and (b) Ecolab PTY 
hereby represents to the Local Currency Banks that as of the date hereof, the 
representations and warranties set forth in ARTICLE III of the Local Currency 
addendum are true and correct and Ecolab PTY is in full compliance with all 
of the terms and conditions of the Local Currency Addendum.

          SECTION 5.  REFERENCE TO AND EFFECT ON THE CREDIT AGREEMENT. Upon 
the effectiveness of this Amendment, each reference in the Credit Agreement 
or the Local Currency Addendum  to "this Agreement", "this Addendum", 
"hereunder", "hereof", "herein", or words of like import shall mean and be a 
reference to the Credit Agreement or the Local Currency Addendum, as 
applicable, as modified hereby, and each reference to the Credit Agreement or 
the Local Currency Addendum in any other document, instrument or agreement 
shall mean and be a reference to the Credit Agreement or the Local Currency 
Addendum, as applicable, as modified hereby.

          SECTION 6.  GOVERNING LAW.  THIS AMENDMENT SHALL BE GOVERNED BY AND 
CONSTRUED IN ACCORDANCE WITH THE OTHER REMAINING TERMS OF THE CREDIT 
AGREEMENT AND THE LOCAL CURRENCY ADDENDUM AND THE LAWS OF THE STATE OF NEW 
YORK.

          SECTION 7.  PARAGRAPH HEADINGS.  The paragraph headings contained 
in this Amendment are and shall be without substance, meaning or content of 
any kind whatsoever and are not a part of the agreement among the parties 
hereto.

          SECTION 8.  COUNTERPARTS.  This Amendment may be executed in one or 
more counterparts, each of which shall be deemed an original, but all of 
which together shall constitute one and the same instrument.

                    [This space intentionally left blank]


                                      -5-

<PAGE>

          IN WITNESS WHEREOF, this Amendment has been duly executed as of the 
day and year first above written.  

                              ECOLAB INC.

                              By: /s/Daniel J. Schmechel
                                 ------------------------------------
                                 Name:  Daniel J. Schmechel
                                 Title: Assistant Treasurer   


                              Signed, sealed and delivered by Daniel J.
                              Schmechel as attorney for Ecolab PTY Limited (ACN
                              000 449 990) under power of attorney dated
                              September 26, 1997 in the presence of 


                              /s/Kenneth A. Iverson        
                              ---------------------------------------
                              (Witness)
                              
                              Kenneth A. Iverson          
                              ---------------------------------------
                              (Name)

                              1565 Red Cedar Rd. Eagan, MN
                              ---------------------------------------
                              (Address)

                              Attorney                    
                              ---------------------------------------
                              (Occupation)


                              /s/ Daniel J. Schmechel      
                              ---------------------------------------
                              By executing this deed the attorney states that
                              the attorney has received no notice of revocation
                              of the power of attorney


                                      -6-

<PAGE>

                              CITIBANK, N.A.


                              By: /s/ Laura A. Siracuse
                                Name: Laura A. Siracuse
                                Title: Attorney-In-Fact


                                      -7-

<PAGE>

                              MORGAN GUARANTY TRUST COMPANY OF NEW YORK


                              By: /s/ Robert Bottamedi
                                Name: Robert Bottamedi
                                Title: Vice President


                                      -8-

<PAGE>

                              COMMERZBANK AKTIENGESELLSCHAFT, CHICAGO BRANCH


                              By: /s/ J. Timothy Shortly
                                Name: J. Timothy Shortly
                                Title: Senior Vice President


                              By: /s/ Mark Monson
                                Name: Mark Monson
                                Title: Vice President



                                      -9-

<PAGE>


                              CREDIT SUISSE FIRST BOSTON


                              By: /s/ Joel Glodowski
                                Name: Joel Glodowski
                                Title: Managing Director

                              By: /s/ David W. Kratovil
                                Name: David W. Kratovil
                                Title: Director


                                     -10-

<PAGE>


                              THE FIRST NATIONAL BANK OF CHICAGO


                              By: /s/ J. Garland Smith
                                Name: J. Garland Smith
                                Title: Managing Director


                              NATIONSBANK, N.A.


                              By: /s/ Valerie C. Mills
                                Name: Valerie C. Mills
                                Title: Senior Vice President


                              WACHOVIA BANK, N.A.


                              By: /s/ Frances W. Josephic
                                Name: Frances W. Josephic
                                Title: Vice President


                                     -11-



<PAGE>

                  ECOLAB FINANCE PTY LIMITED (ACN 082 979 655)
                            LOCAL CURRENCY ADDENDUM

     AUSTRALIAN DOLLAR ADDENDUM dated as of June 23, 1998, to the Credit 
Agreement (as defined below).

                                   ARTICLE I
                                  DEFINITIONS

          SECTION 1.01.  DEFINED TERMS.  As used in this Addendum, the 
following terms shall have the meanings specified below:

          "AUSTRALIAN DOLLARS" means the lawful currency of Australia.

          "BORROWING SUBSIDIARY" means Ecolab Finance PTY Limited (ACN 082 
979 655), a company incorporated in New South Wales.

          "BBSY BID RATE" means, with respect to any Local Currency Advance 
for the relevant Interest Period, the average rate (rounded upwards to two 
decimal places) determined by the Local Currency Agent to be the Bid Rate for 
bills of exchange quoted on the Reuters page "BBSY" headed Bank Bid Swap 
Reference Rate, or another page that replaces the "BBSY" page on that system 
to display average bid rates for bank accepted bills of exchange, and set at 
approximately 10:00 a.m. (Sydney time) on the first day of such Interest 
Period, and which bills of exchange have a tenor approximately equal to such 
Interest Period; PROVIDED, HOWEVER, if in respect of any Interest Period the 
BBSY Bid Rate cannot be determined in accordance with the foregoing 
procedures, or there is a manifest error in the calculations of that rate or 
that rate is not displayed by 10:30 a.m. (Sydney time) on the first day of 
the relevant Interest Period, then the "BBSY Bid Rate" for that day or 
Interest Period shall be the rate determined by the Local Currency Agent, in 
good faith to be the appropriate rate, having regard, to the rates otherwise 
bid for bills of exchange of that tenor at or around that time.

          "BBSY ADVANCE" means a Local Currency Advance which bears interest 
with reference to the BBSY Bid Rate.

          "CREDIT AGREEMENT" means the Credit Agreement dated as of September 
29, 1993, as amended and restated as of October 17, 1997, among Ecolab Inc., 
the Borrowing Subsidiaries from time to time party thereto, the financial 
institutions from time to time party thereto as Banks, Citibank, N.A., as 
Administrative Agent, Citibank International PLC, as Euro-Agent and Morgan 
Guaranty Trust Company 

<PAGE>

of New York, as Co-Agent, and as the same may be amended, waived, modified or 
restated from time to time.

          "ECOLAB PTY ADDENDUM" means the Local Currency Addendum dated as of 
October 17, 1997 among Ecolab PTY Limited, the Company, the Agent, the Local 
Currency Banks named therein, and Citisecurities Limited as the Local 
Currency Agent, as amended from time to time.

          "ELIGIBLE LOCAL CURRENCY BANK" means any Local Currency Bank 
meeting the eligibility criteria set forth in SCHEDULE III.

          "LOCAL CURRENCY ADVANCE" means any Advance, denominated in 
Australian Dollars (or "A"), made to the Borrowing Subsidiary or the Company 
pursuant to SECTIONS 2.02A and 2.02B of the Credit Agreement and this 
Addendum.  A Local Currency Advance shall bear interest at the rate specified 
in SCHEDULE II.

          "LOCAL CURRENCY BANK" means each Bank listed on the signature pages 
of this Addendum, or which becomes a party hereto pursuant to an Assignment 
and Acceptance.

          "MONEY MARKET RATE" means, with respect to any Local Currency 
Advance for the relevant Interest Period, the average of the rate (rounded 
upwards to two decimal places) quoted by each Local Currency Bank to the 
Local Currency Agent as its one day (overnight) or 7 day (as applicable) 
money market rate for such Interest Period.

          "MONEY MARKET RATE ADVANCE" means a Local Currency Advance which 
bears interest with reference to the Money Market Rate.

          SECTION 1.02.  TERMS GENERALLY.  Unless otherwise defined herein, 
terms defined in the Credit Agreement shall have the same meanings in this 
Addendum.  Wherever the context may require, any pronoun shall include the 
corresponding masculine, feminine and neuter forms.  The words "include", 
"includes" and "including" shall be deemed to be followed by the phrase 
"without limitation".  All references herein to Sections and Schedules shall 
be deemed references to Sections of and Schedules to this Addendum unless the 
context shall otherwise require.

                                   ARTICLE II
                                   THE CREDITS

          SECTION 2.01.  LOCAL CURRENCY ADVANCES.  (a)  This Addendum (as the 
same may be amended, waived, modified or restated from time to time) is a 
"Local Currency Addendum" as defined in the Credit Agreement and is, together 
with the borrowings made hereunder, subject in all respects to the terms and 
provisions of 


                                       2

<PAGE>

the Credit Agreement except to the extent that the terms and provisions of 
the Credit Agreement are modified by or are inconsistent with this Addendum, 
in which case this Addendum shall control.  The Local Currency Banks party to 
this Addendum are set forth on SCHEDULE I.

          (b)  Any modifications to the interest payment dates, Interest 
Periods, interest rates and any other special provisions applicable to Local 
Currency Advances under this Addendum are set forth on SCHEDULE II.  If 
SCHEDULE II states "None" with respect to any item listed thereon, then the 
corresponding provisions of the Credit Agreement, without modification, shall 
govern this Addendum and the Local Currency Advances made pursuant to this 
Addendum.

          (c)  Any special borrowing procedures or funding arrangements for 
Local Currency Advances under this Addendum, any provisions for the issuance 
of promissory notes to evidence the Local Currency Advances made hereunder 
and any additional information requirements applicable to Local Currency 
Advances under this Addendum are set forth on SCHEDULE III.  If no such 
special procedures, funding arrangements, provisions or additional 
requirements are set forth on SCHEDULE III, then the corresponding 
procedures, funding arrangements, provisions and information requirements set 
forth in the Credit Agreement shall govern this Addendum.

          SECTION 2.02.  MAXIMUM BORROWING AMOUNTS.  (a)  The Local Currency 
Commitment for each Local Currency Bank party to this Addendum is set forth 
on SCHEDULE I.  The Local Currency Facility Aggregate Commitment is set forth 
on SCHEDULE I.

          (b)   Upon at least ten (10) Business Days prior irrevocable 
written notice to the Agent, the Company may from time to time permanently 
reduce the Local Currency Commitments under this Addendum in whole, or in 
part ratably among the Local Currency Banks, in an aggregate minimum amount 
of the Australian Dollar equivalent of $1,000,000, and integral multiples of 
the Australian Dollar equivalent of $1,000,000 in excess thereof; PROVIDED, 
HOWEVER, that the amount of the Local Currency Commitments may not be reduced 
below the aggregate principal amount of the outstanding Local Currency 
Advances with respect thereto.  Any reduction in the Local Currency 
Commitments shall be an automatic reduction of the Local Currency Facility 
Aggregate Commitment.  Any such reduction shall be allocated pro rata among 
all the Local Currency Banks party to this Addendum by reference to their 
Local Currency Commitments.


                                       3

<PAGE>

                                  ARTICLE III
                         REPRESENTATIONS AND WARRANTIES

          Each Borrower party hereto makes and confirms each representation 
and warranty applicable to each Borrower or any of its Subsidiaries contained 
in ARTICLE IV of the Credit Agreement.  Each Borrower party hereto represents 
and warrants to each of the Local Currency Banks party to this Addendum that 
no Default or Events of Default has occurred and is continuing, and no 
Default or Events of Default shall arise as a result of the making of Local 
Currency Advances hereunder or any other transaction contemplated hereby.  
Each Borrower represents and warrants that it is not entering into this 
Addendum in the capacity as trustee of any trust or settlement.

                                   ARTICLE IV
                            MISCELLANEOUS PROVISIONS

          SECTION 4.01.  AMENDMENT; TERMINATION.  (a)  This Addendum 
(including the Schedules hereto) may not be amended without the prior written 
consent of the Majority Local Currency Banks hereunder, but subject to the 
provisions of SECTION 9.01 of the Credit Agreement; PROVIDED, HOWEVER, that 
this SECTION 4.01(a) shall not restrict assignments and participations 
pursuant to SECTION 4.02.

          (b)  This Addendum may not be terminated without the prior written 
consent of each Local Currency Bank party hereto, the  Company and each 
Borrower party hereto unless there are no Local Currency Advances outstanding 
hereunder, in which case no such consent of any Local Currency Bank shall be 
required; PROVIDED, HOWEVER, that this Addendum shall terminate on the date 
that the Credit Agreement terminates in accordance with its terms.

          SECTION 4.02.  ASSIGNMENTS.  SECTION 9.08 of the Credit Agreement 
shall apply to assignments by Local Currency Banks of obligations, 
Commitments and Advances hereunder; PROVIDED, HOWEVER, that (a) a Local 
Currency Bank may not assign any obligations, Commitments or rights hereunder 
to any Person that is not (or does not simultaneously become) (i) a Bank 
under the Credit Agreement and (ii) a Local Currency Bank under the Ecolab 
PTY Addendum, and (b) such assignment shall be entered into simultaneously 
with an assignment by such Local Currency Bank to such assignee of the same 
percentage of its obligations, Commitments and rights under the Ecolab PTY 
Addendum as is being assigned hereunder.

          SECTION 4.03.  NOTICES.  Notices and other communications provided 
for herein shall be in writing and shall be delivered by hand or overnight 
courier service, mailed by certified or registered mail or sent by telecopy, 
as follows:


                                       4

<PAGE>

          (a) if to the Borrowing Subsidiary under this Addendum, at 6 Hudson
     Avenue, Castle Hill, New South Wales 2154, Attention:  Finance Director
     (Telecopy No. 612-9899-3105) with a copy to the Company at its address and
     telecopy number referenced in SECTION 9.02 of the Credit Agreement;

          (b) if to the Company, at its address and telecopy number referenced
     in SECTION 9.02 of the Credit Agreement;

          (c) if to the Local Currency Agent, at Citisecurities Limited (ACN 008
     489 610), Level 10, Citibank Centre, 1 Margaret Street, Sydney, New South
     Wales 2000, Attention: Manager, Agency Division, (Telecopy No.:
     612-9262-2520) with a copy to the Agent at its address and telecopy number
     referenced in SECTION 9.02 of the Credit Agreement; and

          (d) if to a Local Currency Bank, at its address (and telecopy number)
     set forth in SCHEDULE I or in the Assignment and Acceptance pursuant to
     which such Local Currency Bank became a party hereto.

All notices and other communications given to any party hereto in accordance 
with the provisions of this Agreement shall be deemed to have been given on 
the date of receipt if delivered by hand or overnight courier service or sent 
by telecopy to such party as provided in this Section or in accordance with 
the latest unrevoked direction from such party given in accordance with this 
Section.  

          SECTION 4.04.  RATIFICATION OF GUARANTY.  By its execution of this 
Addendum, the Company ratifies and confirms its guaranty contained in ARTICLE 
VIII of the Credit Agreement with respect to the Local Currency Advances made 
pursuant to this Addendum which Guaranty remains in full force and effect

          SECTION 4.05.  SHARING OF PAYMENTS, ETC.  If any Local Currency 
Bank shall obtain any payment (whether voluntary, involuntary, through the 
exercise of any right of set-off, or otherwise) on account of the Local 
Currency Advances made by it (other than pursuant to SECTION 2.08, 2.12 or 
2.17 of the Credit Agreement) in excess of its ratable share of payments on 
account of the Local Currency Advances obtained by all the Local Currency 
Banks, such Local Currency Bank shall forthwith purchase from the other Local 
Currency Banks such participations in the Local Currency Advances made by 
them as shall be necessary to cause such purchasing Local Currency Bank to 
share the excess payment ratably with each of them, PROVIDED, HOWEVER, that 
if all or any portion of such excess payment is thereafter recovered from 
such purchasing Local Currency Bank, such purchase from each Local Currency 
Bank shall be rescinded and such Local Currency Bank shall repay to the 
purchasing Local Currency Bank the purchase price to the extent of such 
recovery together with an amount equal to such Local Currency 


                                       5

<PAGE>

Bank's ratable share (according to the proportion of (i) the amount of such 
Local Currency Bank's required repayment to (ii) the total amount so 
recovered from the purchasing Local Currency Bank) of any interest or other 
amount paid or payable by the purchasing Local Currency Bank in respect of 
the total amount so recovered.  Each Borrower agrees that any Local Currency 
Bank so purchasing a participation from another Local Currency Bank pursuant 
to this SECTION 4.05 may, to the fullest extent permitted by law, exercise 
all its rights of payment (including the right of set-off) with respect to 
such participation as fully as if such Local Currency Bank were the direct 
creditor of such Borrower in the amount of such participation.

          SECTION 4.06.  APPLICABLE LAW.  THIS ADDENDUM SHALL BE GOVERNED BY 
AND INTERPRETED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW 
YORK. 

          SECTION 4.07.  ELIGIBLE LOCAL CURRENCY BANKS.  Each Local Currency 
Bank confirms that on the date of this Addendum it is an Eligible Local 
Currency Bank, and agrees that it will promptly notify the Local Currency 
Agent, the Agent and the Company if at any time in the future it determines 
that it has ceased to be an Eligible Local Currency Bank.

          SECTION 4.08   EXECUTION IN COUNTERPARTS.  This Addendum may be 
executed in any number of counterparts and by different parties hereto in 
separate counterparts, each of which when so executed shall be deemed to be 
an original and all of which taken together shall constitute one and the same 
agreement.

                                  ARTICLE V
                           THE LOCAL CURRENCY AGENT

          SECTION 5.01  APPOINTMENT; NATURE OF RELATIONSHIP.  Citisecurities 
Limited (ACN 008 489 610) is appointed by the Local Currency Banks as the 
Local Currency Agent hereunder, and each of the Local Currency Banks 
irrevocably authorizes the Local Currency Agent to act as the contractual 
representative of such Local Currency Bank with the rights and duties 
expressly set forth herein and in the Credit Agreement applicable to the 
Local Currency Agent.  The Local Currency Agent agrees to act as such 
contractual representative upon the express conditions contained in this 
ARTICLE V.  Notwithstanding the use of the defined term "Local Currency 
Agent," it is expressly understood and agreed that the Local Currency Agent 
shall not have any fiduciary responsibilities to any Local Currency Bank or 
other Bank  by reason of this Addendum and that the Local Currency Agent is 
merely acting as the representative of the Local Currency Banks with only 
those duties as are expressly set forth in this Addendum and the Credit 
Agreement.  In its capacity as the Local Currency Banks' 


                                       6

<PAGE>

contractual representative, the Local Currency Agent (i) does not assume any 
fiduciary duties to any of the Banks, (ii) is a "representative" of the Local 
Currency Banks within the meaning of Section 9-105 of the Uniform Commercial 
Code and (iii) is acting as an independent contractor, the rights and duties 
of which are limited to those expressly set forth in this Addendum and the 
Credit Agreement. Each of the Banks agrees to assert no claim against the 
Local Currency Agent on any agency theory or any other theory of liability 
for breach of fiduciary duty, all of which claims each Bank waives. 

     SECTION 5.02  POWERS.  The Local Currency Agent shall have and may 
exercise such powers under this Addendum and the Credit Agreement as are 
specifically delegated to the Local Currency Agent by the terms of each 
thereof, together with such powers as are reasonably incidental thereto.  The 
Local Currency Agent shall have no implied duties or fiduciary duties to the 
Banks, or any obligation to the Banks to take any action hereunder or under 
the Credit Agreement except any action specifically provided by this Addendum 
or the Credit Agreement required to be taken by the Local Currency Agent.

     SECTION 5.03  GENERAL IMMUNITY.  Neither the Local Currency Agent nor 
any of its respective directors, officers, agents or employees shall be 
liable to any of the Borrowers or any Bank for any action taken or omitted to 
be taken by it or them hereunder or under the Credit Agreement or in 
connection herewith or therewith except to the extent such action or inaction 
is found in a final non-appealable judgment by a court of competent 
jurisdiction to have arisen solely from the gross negligence or willful 
misconduct of such Person.

     SECTION 5.04  NO RESPONSIBILITY FOR ADVANCES, CREDITWORTHINESS, 
COLLATERAL, RECITALS, ETC.  Neither the Local Currency Agent nor any of its 
respective directors, officers, agents or employees shall be responsible for 
or have any duty to ascertain, inquire into, or verify (i) any statement, 
warranty or representation made in connection with this Addendum or any 
borrowing hereunder; (ii) the performance or observance of any of the 
covenants or agreements of any obligor under this Addendum; (iii) the 
satisfaction of any condition specified in ARTICLE IV to the Credit 
Agreement; (iv) the existence or possible existence of any Default or Event 
of Default or (v) the validity, effectiveness or genuineness of the Credit 
Agreement, this Addendum, or any other instrument or writing furnished in 
connection therewith.  The Local Currency Agent shall not be responsible to 
any Bank for any recitals, statements, representations or warranties herein 
or in the Credit Agreement, for the perfection or priority of any of the 
Liens on any of the Collateral, or for the execution, effectiveness, 
genuineness, validity, legality, enforceability, collectibility, or 
sufficiency of this Addendum or the transactions 


                                       7

<PAGE>

contemplated hereby or thereby, or for the financial condition of the Company 
or any of its Subsidiaries.

     SECTION 5.05  ACTION ON INSTRUCTIONS OF LOCAL CURRENCY LENDERS.  The 
Local Currency Agent shall in all cases be fully protected in acting, or in 
refraining from acting, hereunder and under the Credit Agreement in 
accordance with written instructions signed by Local Currency Banks with not 
less than 51% of the Local Currency Commitments (except with respect to 
actions that require the consent of all of the Banks as provided in SECTION 
9.01 of the Credit Agreement), and such instructions and any action taken or 
failure to act pursuant thereto shall be binding on all of the Banks.  The 
Local Currency Agent shall be fully justified in failing or refusing to take 
any action hereunder and under the Credit Agreement unless it shall first be 
indemnified to its satisfaction by the Banks pro rata against any and all 
liability, cost and expense that it may incur by reason of taking or 
continuing to take any such action.

     SECTION 5.06  EMPLOYMENT OF AGENTS AND COUNSEL.  The Local Currency 
Agent may execute any of its duties hereunder and under the Credit Agreement 
by or through employees, agents, and attorneys-in-fact, and shall not be 
answerable to the Banks, except as to money or securities received by it or 
its authorized agents, for the default or misconduct of any such agents or 
attorneys-in-fact selected by it with reasonable care.  The Local Currency 
Agent shall be entitled to advice of counsel concerning the contractual 
arrangement among the Local Currency Agent and the Banks, as the case may be, 
and all matters pertaining to its duties hereunder and under the Credit 
Agreement.

     SECTION 5.07  RELIANCE ON DOCUMENTS; COUNSEL.  The Local Currency Agent 
shall be entitled to rely upon any Note, notice, consent, certificate, 
affidavit, letter, telegram, statement, paper or document believed by it to 
be genuine and correct and to have been signed or sent by the proper person 
or persons, and, in respect to legal matters, upon the opinion of counsel 
selected by the Local Currency Agent, which counsel may be employees of the 
Local Currency Agent.

     SECTION 5.08  THE LOCAL CURRENCY AGENT'S REIMBURSEMENT AND 
INDEMNIFICATION. The Local Currency Banks agree to reimburse and indemnify 
the Local Currency Agent ratably in proportion to their respective Local 
Currency Commitments (i) for any amounts not reimbursed by the Borrowers for 
which the Local Currency Agent is entitled to reimbursement or 
indemnification by the Borrowers hereunder or under the Credit Agreement, 
(ii) for any other expenses incurred by the Local Currency Agent on behalf of 
the Local Currency Banks, in connection with the preparation, execution, 
delivery, administration and enforcement of the Addendum including as a 
result of a dispute among the Local Currency Banks 


                                       8

<PAGE>

or between any Local Currency Bank and the Agent or the Local Currency Agent, 
and (iii) for any liabilities, obligations, losses, damages, penalties, 
actions, judgments, suits, costs, expenses or disbursements of any kind and 
nature whatsoever which may be imposed on, incurred by or asserted against 
the Local Currency Agent in any way relating to or arising out of the 
Addendum, the Credit Agreement or any other document delivered in connection 
therewith or the transactions contemplated hereby or thereby, or the 
enforcement of any of the terms thereof or of any such other documents, 
including as a result of a dispute among the Banks or between any Bank and 
the Agent or the Local Currency Agent,  provided that no Bank shall be liable 
for any of the foregoing to the extent any of the foregoing is found in a 
final non-appealable judgment by a court of competent jurisdiction to have 
arisen solely from the gross negligence or willful misconduct of the Local 
Currency Agent.

     SECTION 5.09  RIGHTS AS A BANK.  With respect to its Commitment, Local 
Currency Commitment, Advances made by it, and any Notes issued to it in its 
individual capacity, the Local Currency Agent shall have the same rights and 
powers hereunder and under the Credit Agreement as any Bank and may exercise 
the same as through it were not the Local Currency Agent, and the term "Bank" 
or "Banks" or "Local Currency Bank" or "Local Currency Banks", as applicable, 
shall, unless the context otherwise indicates, include the Local Currency 
Agent in its individual capacity.  The Local Currency Agent may accept 
deposits from, lend money to, and generally engage in any kind of trust, 
debt, equity or other transaction, in addition to those contemplated by this 
Addendum or the Credit Agreement, with the Company or any of its Subsidiaries 
in which such Person is not prohibited hereby from engaging with any other 
Person.

     SECTION 5.10 BANK CREDIT DECISION.  Each Local Currency Bank 
acknowledges that it has, independently and without reliance upon the Local 
Currency Agent or any other Local Currency Bank and based on the financial 
statements prepared by the Company and the Borrowers and such other documents 
and information as it has deemed appropriate, made its own credit analysis 
and decision to enter into this Addendum and the Credit Agreement.  Each 
Local Currency Bank also acknowledges that it will, independently and without 
reliance upon the Local Currency Agent or any other Bank and based on such 
documents and information as it shall deem appropriate at the time, continue 
to make its own credit decisions in taking or not taking action under this 
Addendum and the Credit Agreement.

     SECTION 5.11  SUCCESSOR LOCAL CURRENCY AGENT.  The Local Currency Agent 
may resign at any time by giving written notice thereof to the Agent, the 
Local Currency Banks and the Company.  Upon any such resignation, the 
Majority Local Currency Banks, with the consent of the Agent, shall have the 
right to appoint, on 


                                       9

<PAGE>

behalf of the Borrowers and the Banks, a successor Local Currency Agent.  If 
no successor Local Currency Agent shall have been so appointed by the 
Majority Local Currency Banks and shall have accepted such appointment within 
thirty days after the retiring Local Currency Agent's giving notice of 
resignation, then the retiring Local Currency Agent may appoint, on behalf of 
the Borrowers and the Banks, a successor Local Currency Agent.  
Notwithstanding anything herein to the contrary, so long as no Default or 
Event of Default has occurred and is continuing, each such successor Local 
Currency Agent shall be subject to approval by the Company, which approval 
shall not be unreasonably withheld. Such successor Local Currency Agent shall 
be a commercial bank having capital and retained earnings of at least 
$250,000,000.  Upon the acceptance of any appointment as the Local Currency 
Agent hereunder by a successor Local Currency Agent, such successor Local 
Currency Agent shall thereupon succeed to and become vested with all the 
rights, powers, privileges and duties of the retiring Local Currency Agent, 
and the retiring Local Currency Agent shall be discharged from its duties and 
obligations hereunder and under the Credit Agreement.  After any retiring 
Local Currency Agent's resignation hereunder as Local Currency Agent, the 
provisions of this ARTICLE V shall continue in effect for its benefit in 
respect of any actions taken or omitted to be taken by it while it was acting 
as the Local Currency Agent hereunder and under the Credit Agreement.


                                      10

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Addendum to 
be duly executed as a deed by their duly authorized officers, all as of the 
date and year first above written.

Executed as a deed.


                              ECOLAB INC.
                              

                              By: /s/ Daniel J. Schmechel   
                                 -----------------------------------
                                 Name:  Daniel J. Schmechel
                                 Title: Assistant Treasurer


                              SIGNED, SEALED AND DELIVERED BY Daniel J.
                              Schmechel as attorney for Ecolab Finance PTY
                              Limited (ACN 082 979 655) under power of attorney
                              dated June 19, 1998 in the presence of

                              /s/ Kenneth A. Iverson        
                              --------------------------------------
                              Witness
                              Kenneth A. Iverson           
                              --------------------------------------
                              Name
                              1565 Red Cedar Rd., Eagan, MN 55121
                              --------------------------------------
                              Address
                              Attorney                     
                              --------------------------------------
                              Occupation


                              /s/ Daniel J. Schmechel        
                              --------------------------------------
                              By executing this deed the attorney states that
                              the attorney has received no notice of revocation
                              of the power of attorney


                                      S-1

<PAGE>

                              CITIBANK, N.A., as the Agent


                              By: /s/ Laura S. Siracuse
                                 Name: Laura S. Siracuse
                                 Title: Attorney-In-Fact


                                      S-2

<PAGE>

              CITISECURITIES LIMITED (ACN 008 489
              610), as the Local Currency Agent


              By: /s/ Celle Raguine              By: /s/ Shane Taylor
                 Name: Celle Raguine                  Name: Shane Taylor
                 Title: Assistant Vice President      Title: Vice President


                                      S-3

<PAGE>

                              CITIBANK, N.A.


                              By: /s/ Laura A. Siracuse
                                 Name: Laura A. Siracuse
                                 Title: Attorney-In-Fact


                                      S-4

<PAGE>

                              MORGAN GUARANTY TRUST COMPANY 
                              OF NEW YORK


                              By: /s/ Robert Bottamedi
                                 Name: Robert Bottamedi
                                 Title: Vice President


                                      S-5

<PAGE>

                              THE FIRST NATIONAL BANK OF CHICAGO


                              By: /s/ J. Garland Smith
                                 Name: J. Garland Smith
                                 Title: Managing Director


                                      S-6

<PAGE>

                              CREDIT SUISSE FIRST BOSTON


                              By: /s/ Joel Glodowski
                                 Name: Joel Glodowski
                                 Title: Managing Director


                              By: /s/ David W. Kratovil
                                 Name: David W. Kratovil
                                 Title: Director



                                      S-7

<PAGE>

                                                                      SCHEDULE I
                                                      to Local Currency Addendum

                              Local Currency Banks
                           Local Currency Commitments
                Local Currency Facility Aggregate Commitment
                           Applicable Lending Office

<TABLE>
<CAPTION>
                                                     Local Currency
                 Local Currency Bank Name              Commitment
                 ------------------------          ------------------
                 <S>                               <C>
                 Citibank, N.A.                     US $ 53,000,000*

                 Morgan Guaranty Trust Company              
                   of New York                      US $ 47,000,000*

                 The First National Bank of         
                   Chicago                          US $ 43,000,000*

                 Credit Suisse First Boston         US $ 33,000,000*

                 Local Currency Facility            
                 Aggregate Commitment               US $176,000,000**
</TABLE>

*    Less, in each case, the Local Currency Advances outstanding from such 
Local Currency Bank under the Ecolab PTY Addendum.

**   Less the aggregate Local Currency Advances outstanding under the Ecolab 
PTY Addendum.

<TABLE>
<CAPTION>
                                        Applicable Local
                                        Currency Lending
Local Currency Bank Name                     Office     
- ------------------------                ----------------
<S>                                     <C>
Citibank, N.A.                          Level 10, Citibank Centre
(ARBN 072 814 058)                      1 Margaret Street
                                        Sydney, New South Wales
                                        Attention:  Vice President,
                                                    Corporate Finance
                                        Telecopy No.: 612-9262-2520

Morgan Guaranty Trust                   1 O'Connell Street
  Company of New York                   Sydney, New South Wales
                                        Attention:  Grant Bolam
                                        Telecopy No.:  612-9551-6359

The First National Bank                 Level 32, 60 Margaret Street
  of Chicago                            Sydney 2001
                                        Attention:  William Giffen
                                        Telecopy No.:  612-9223-1823

<PAGE>

Credit Suisse First Boston              101 Collins Street, Level 27
                                        Melbourne, Victoria 3000
                                        Attention:  Malcolm White, 
                                                    Head of Credit
                                                    Administration
                                        Telecopy No.:  613-965-33-444
</TABLE>




                                      S-2

<PAGE>

                                                                     SCHEDULE II
                                                      to Local Currency Addendum

                                 MODIFICATIONS

1.   BUSINESS DAY DEFINITION:

          "BUSINESS DAY" shall mean a day (other than a Saturday or Sunday) on
     which banks are open for business in New York and Sydney.  (See definition
     of "Business Day" and Section 1.01 of Credit Agreement) 

2.   INTEREST PAYMENT DATES: Interest shall be paid on the last day of each
     Interest Period for Local Currency Advances.  (See Section 2.07(d) of
     Credit Agreement).


3.   INTEREST PERIODS: Each Interest Period for a BBSY Advance shall be a period
     of 30, 60, 90, 120, 150 or 180 days as selected by the Company, and each
     Interest Period for a Money Market Rate Advance shall be a period of 1 or 7
     days as selected by the Company.  (See definition of "Interest Period",
     Section 1.01 and Section 2.07(d) of Credit Agreement).


4.   INTEREST RATES:

          (a)  FIXED RATE LOCAL CURRENCY ADVANCES DENOMINATED IN AUSTRALIAN
     DOLLARS:   Each Local Currency Advance denominated in Australian Dollars
     and for which an Interest Period has been selected in accordance with the
     terms of Article II of the Credit Agreement and this Addendum shall bear
     interest from and including the first day of the Interest Period applicable
     thereto to (but not including) the last day of such Interest Period at a
     rate per annum equal to the sum of (i) in the case of a BBSY Advance, (A)
     the BBSY Bid Rate for such Local Currency Advance for such Interest Period
     PLUS (B) the Applicable Margin as in effect from time to time during such
     Interest Period; and (ii) in the case of a Money Market Rate Advance, (A)
     the Money Market Rate for such Local Currency Advance for such Interest
     Period plus (B) the Applicable Margin as in effect from time to time during
     such period; PROVIDED, HOWEVER, that any amount of principal which is not
     paid when due (whether at stated maturity, by acceleration or otherwise)
     shall bear interest, from the date on which such amount is due until such
     amount is paid in full, payable on demand, at all times equal to 2% per
     annum above the sum of the BBSY Bid Rate with a 30 day Interest Period (or
     such other period as the Local Currency Agent may select) PLUS the
     Applicable Margin.  Computations of interest 


                                     S-1

<PAGE>

     shall be made on the basis of a year of 365 or 366 days as the case may be,
     for the actual number of days (including the first day but excluding the 
     last day) occurring in the period for which such interest is payable.  
     (See Section 2.07(d) of Credit Agreement).

          (b)  FLOATING RATE LOCAL CURRENCY ADVANCES DENOMINATED IN AUSTRALIAN
     DOLLARS:  There is no separate Floating Rate Advance interest rate option
     under this Addendum.  Whenever under the Credit Agreement an Advance
     hereunder is required to be a Floating Rate Advance, and in each case in
     which no Interest Period has been selected in accordance with the terms of
     Article II of the Credit Agreement and this Addendum, the applicable Local
     Currency Advance shall bear interest as provided in paragraph (a)(i) of
     this Section 4 and have an Interest Period of 30 days (or if an Event of
     Default is outstanding or a Floating Rate Advance is required by SECTION
     2.13, such other number of days as specified by the Local Currency Agent). 
     For purposes of SECTION 2.10 of the Credit Agreement, a Local Currency
     Advance bearing interest under this Section 4(b) shall be eligible for
     Conversion into a Fixed Rate Local Currency Advance and shall for this
     purpose be a "Type" of Local Currency Advance.  In addition, for purposes
     of SECTION 9.04(b) of the Credit Agreement, a Local Currency Advance
     bearing interest under this Section 4(b) shall be treated as a Fixed Rate
     Advance.

5.   APPLICABLE MARGIN.

     "APPLICABLE MARGIN" for each Floating Rate and Fixed Rate Local Currency
     Advance made pursuant to this Addendum, shall be determined, in a manner
     consistent with the textual provisions of SECTION 2.07(c) of the Credit
     Agreement, by reference to the following:

<TABLE>
<CAPTION>
                                        Applicable Margin   
     Credit Rating                      (Rate per annum)    
     -------------                      -----------------
     <S>                                <C>
     A  or better (S&P) OR
     A2 or better (Moody's)                  0.21%          

     Below A (S&P) and A2
     (Moody's) but
     A- (S&P) OR A3 (Moody's)                0.22%          

     Below A- (S&P) and A3 (Moody's)
     but
     BBB+ (S&P) OR Baa1 (Moody's)            0.265%         

     Below BBB+ (S&P) and Baa1 (Moody's)
     but


                                     S-2

<PAGE>

     BBB (S&P) OR Baa2 (Moody's)             0.32%          

     Below BBB (S&P) and Baa2 (Moody's)
     but
     BBB- (S&P) AND Baa3 (Moody's)           0.405%         

     Below BBB- (S&P) OR Baa3 (Moody's)      0.555%         
</TABLE>

     If, on the first day of the Interest Period for any Local Currency Advance,
     the Company shall not have Credit Ratings from both S&P and Moody's, the
     Credit Ratings of the Company for purposes of this Addendum shall be deemed
     to be below BBB- (S&P) and below Baa3 (Moody's) during such period.  In
     addition, and notwithstanding the foregoing chart, if the Credit Rating of
     the Company from S&P is more than one level higher or lower than the
     equivalent Credit Rating from Moody's at such time, then the Applicable
     Fixed Rate Margin shall be determined as if the applicable Credit Rating of
     the Company from each of S&P and Moody's were one level higher than the
     lower of the two Credit Ratings.  (See Section 2.07(d) of Credit
     Agreement).

6.   MODIFICATIONS TO INTEREST PERIOD SELECTION/CONVERSION CONTAINED IN SECTION
     2.10:
    
     Notice of Conversion/continuation shall be given by the Borrowing 
Subsidiary as follows:

     Not later than 10:00 a.m (Sydney time) two (2) Business Days prior to the
     proposed commencement of the Interest Period pursuant to a continuation or
     Conversion.  (See Section 2.10 of Credit Agreement).

7.   OTHER:

     The provisions of SECTIONS 2.09(c) and (d) shall not apply to Local
     Currency Advances under this Local Currency Addendum.

     Termination Date for Addendum:  The "Termination Date" under the Credit
     Agreement.

     Prepayment Notices:  The Borrowing Subsidiary or the Company, as
     applicable, shall be permitted to prepay a Local Currency Advance on the
     last day of its then current Interest Period, and subject to the provisions
     of Section 9.04(b), on any other Business Day, provided, in the case of any
     prepayment of a BBSY Advance, notice thereof is given to the Local Currency
     Agent not later than 10:00 a.m. (Sydney time) at least five (5) Business
     Days prior to the date of such prepayment.  (See Section 2.11 of Credit
     Agreement).


                                     S-3

<PAGE>

                                                                    SCHEDULE III
                                                      to Local Currency Addendum

                               OTHER PROVISIONS


1.   BORROWING PROCEDURES:

     (a)  Notice of Borrowing shall be given by the Borrowing Subsidiary or the
     Company, as applicable, to the Local Currency Agent as follows:

          Not later than 10:00 a.m (Sydney time) two (2) Business Days prior to
          the date of the proposed Borrowing.  A Notice of Borrowing may also be
          given before 8:00 a.m. (Sydney time) with respect to BBSY Advances, or
          10:30 a.m. (Sydney time) with respect to Money Market Rate Advances on
          the date of a proposed Borrowing; PROVIDED that any such Notice of
          Borrowing shall have on its heading: "URGENT-SAME DAY VALUE DRAWDOWN",
          and shall be faxed, in addition to the Local Currency Agent, to
          Citibank, N.A. (Sydney branch), Operations Division, fax no.
          612-9239-9193, Attention: Trevor Dutton; and PROVIDED FURTHER, that,
          as a matter of precatory intent, and not as a condition to its use,
          the Borrowing Subsidiary and Company shall endeavor to minimize the
          use of this same day option.  (See Section 2.02B(a) of Credit
          Agreement).

     (b)  Each Notice of Borrowing shall be addressed to the Local Currency
     Agent at its address set forth in SECTION 4.03 and shall specify the bank
     account to which the Local Currency Advances are to be made.  Each Notice
     of Borrowing requesting a Borrowing on the date of such Notice shall also
     be addressed to each Local Currency Bank at its address set forth in
     SCHEDULE I and shall specify each Local Currency Bank's pro rata share of
     the proposed Borrowing.

2.   FUNDING ARRANGEMENTS:

     Minimum amounts of Borrowings and increments for Local Currency Advances,
     repayments and prepayments: $2,000,000 with increments of $1,000,000 (See
     Section 2.01(b) of Credit Agreement).

3.   PROMISSORY NOTES:  [None required]

4.   FUNDING:


                                     S-1

<PAGE>

     Cleared funds to be made available by Local Currency Bank to Local Currency
     Agent by 12:00 (noon) on the date of each Local Currency Borrowing.  (See
     Section 2.02B(b) of Credit Agreement).

5.   ELIGIBILITY CRITERIA FOR LOCAL CURRENCY BANKS:

     To be an Eligible Local Currency Bank, a Local Currency Bank must:

     (i)  be either (A) a resident of Australia or (B) a non-resident carrying 
on business in Australia through a permanent establishment in Australia, in 
either case, that will make Local Currency Advances from its Australian 
office or branch; and

     (ii) be obligated to include interest received on any Local Currency 
Advance in its assessable income by reason of carrying on business in 
Australia through a permanent establishment in Australia for purposes of the 
Income Tax Assessment Act 1936 (Cth) or any other legislation introduced in 
conjunction with the taxation laws improvement program in Australia.

6.   BILL RELIQUIFICATION OPTION.

     (a)  Each of the Company and the Borrowing Subsidiary agrees that Local
     Currency Bank may draw Bills on its behalf in the manner required by the
     Local Currency Bank.  The face value of those Bills, when added to the
     aggregate face value of all other Bills drawn under this clause in respect
     of that Local Currency Bank and which are outstanding, shall not exceed the
     amount of the Local Currency Bank's outstanding BBSY Advances in favor of
     the Company or the Borrowing Subsidiary, as applicable.  A Bill's maturity
     date must not exceed the end of the Interest Period for the Local Currency
     Advance in respect of which such Bill was drawn.  In calculating the
     aggregate face value of Bills which a Local Currency Bank is entitled to
     have drawn under this clause, the aggregate face value of Bills drawn by a
     Borrower under this clause in respect of any other Local Currency Bank is
     to be disregarded.

     (b)  Each of the Company and the Borrowing Subsidiary appoints each
     Authorised Officer of the Local Currency Bank as its attorney to draw Bills
     in its name or on its behalf under paragraph (a) and agrees to ratify all
     action properly taken by each Authorised Officer of the Local Currency Bank
     as its attorney under this paragraph.

     (c)  The authority to permit Bills to be drawn under paragraph (a) and the
     appointment under paragraph (b) will cease and be revoked without necessity
     for notice on payment by the Company and the Borrowing Subsidiary of all
     amounts owing to the Local Currency Bank under the Local Currency Addendum
     and cancellation 


                                     S-2

<PAGE>

     and termination of this Local Currency Addendum.  Nothing in paragraphs (a)
     or (b) requires the Company or the Borrowing Subsidiary or authorises the 
     Local Currency Bank or its attorney to draw a Bill which matures after the 
     Termination Date under the Local Currency Addendum.

     (d)  Each Local Currency Bank must pay any stamp duty costs or bank fees in
     relation to or in respect to any Bills drawn by it on behalf of the Company
     or the Borrowing Subsidiary and any dealing with such Bills.

     (e)  (i)  Each Local Currency Bank indemnifies the Borrowing Subsidiary and
          Company against any claim, action, damage, loss, liability, costs,
          charge, expense, outgoing or payment which the Borrowing Subsidiary or
          Company suffers, incurs or is liable for in respect of:

               (A)  the Company, Borrowing Subsidiary or Local Currency Bank as
               authorised under section 6(b) drawing or endorsing a Bill at the
               request of such Local Currency Bank; or

               (B)  the Company or Borrowing Subsidiary being a party to a Bill
               at the request of such Local Currency Bank.

          (ii) The indemnity of each Local Currency Bank contained in section
          6(e)(i):

               (A)  is a continuing obligation of such Local Currency Bank;

               (B)  is an additional, separate and independent obligation of
               such Local Currency Bank; and

               (C)  survives the termination of the Addendum and the payment of
               any Bill drawn at the request of such Local Currency Bank.

     (f)  If the Borrowing Subsidiary or Company discharges by payment any Bill,
     then (but without prejudice to any other right of the Borrowing Subsidiary
     or Company), on the date of payment, the amount of that payment is regarded
     as applied against any Local Currency Advance under the Addendum in respect
     of which the Bill was drawn, and the obligation of the Borrowing Subsidiary
     or Company is accordingly reduced.  This section 6(f) applies
     notwithstanding any contrary provision in the Credit Agreement.

     (g)  Each Local Currency Bank that utilises this section 6 represents and
     warrants that the holder of any Bill drawn by it on behalf of the Company
     or the Borrowing Subsidiary will have 


                                     S-3

<PAGE>

     no rights under the Credit Agreement or under the Local Currency Addendum.

     (h)  For the purposes of this section 6 of Schedule II:

          (i)   Bill has the same meaning as in the BILL OF EXCHANGE ACT, 1909
          (Cwth) and a reference to the drawing, acceptance or endorsement of,
          or other dealing with, a Bill is to be interpreted in accordance with
          that Act;

          (ii)  Authorised Officer means in the case of a Local Currency Bank, a
          director, secretary or an officer whose title contains the word vice
          president, or a person performing the functions of any of them; and

          (iii) Company means Ecolab Inc., but only to the extent that it is a
          Borrower under this Local Currency Addendum.


                                     S-4


<PAGE>

                    NON-STATUTORY STOCK OPTION AGREEMENT

     THIS AGREEMENT is entered into and effective as of this 20th day of 
February, 1998 (the "Date of Grant"), by and between Ecolab Inc. (the 
"Company") and ALLAN L. SCHUMAN (the "Optionee").

     A.   The Company has adopted the Ecolab Inc. 1997 Stock Incentive Plan 
(the "Plan") authorizing the Board of Directors of the Company, or a 
committee as provided for in the Plan (the Board or such a committee to be 
referred to as the "Committee"), to grant non-statutory stock options to 
employees of the Company and its Subsidiaries (as defined in the Plan).

     B.   The Company desires to give the Optionee an inducement to acquire a 
proprietary interest in the Company and an added incentive to advance the 
interests of the Company by granting to the Optionee an option to purchase 
shares of common stock of the Company pursuant to the Plan.

     Accordingly, the parties agree as follows:

ARTICLE 1.  GRANT OF OPTION.

     The Company hereby grants to the Optionee the right, privilege, and 
option (the "Option") to purchase SEVEN HUNDRED FIFTEEN THOUSAND (715,000) 
shares (the "Option Shares") of the Company's common stock, $1.00 par value 
(the "Common Stock"), according to the terms and subject to the conditions 
hereinafter set forth and as set forth in the Plan.  The Option is not 
intended to be an "incentive stock option," as that term is used in Section 
422 of the Internal Revenue Code of 1986, as amended (the "Code").

ARTICLE 2.  OPTION EXERCISE PRICE.

     The per share price to be paid by Optionee in the event of an exercise 
of the Option will be $49.00.

ARTICLE 3.  DURATION OF OPTION AND TIME OF EXERCISE.

     3.1  INITIAL PERIOD OF EXERCISABILITY.  The Option will be exercisable 
as to 100% of the Option Shares beginning on the third anniversary of the 
Date of Grant.  This Option will remain exercisable as to all unexercised 
Option Shares until 5:00 p.m. (St. Paul, Minnesota time) on the date that is 
five years and three months following the Date of Grant ("Time of 
Termination").

<PAGE>

     3.2  TERMINATION OF EMPLOYMENT OR OTHER SERVICE.

     (a)  In the event that the Optionee's employment or other service with 
the Company and all Subsidiaries is terminated by reason of the Optionee's 
death or Disability (as defined in the Plan), this Option will become 
immediately exercisable in full and will remain exercisable for a period of 
five years after such termination (but in no event will this Option be 
exercisable after the Time of Termination).

     (b)  In the event that the Optionee's employment or other service with 
the Company and all Subsidiaries is terminated by reason of the Optionee's 
Retirement (as defined in the Plan), this Option will remain exercisable to 
the extent exercisable as of such termination for a period of five years 
after such termination (but in no event will this Option be exercisable after 
the Time of Termination).

     (c)  In the event the Optionee's employment or other service with the 
Company and all Subsidiaries is terminated for any reason other than death, 
Disability or Retirement, all rights of the Optionee under the Plan and this 
Agreement will immediately terminate without notice of any kind, and this 
Option will no longer be exercisable; provided, however that if such 
termination is due to any reason other than termination by the Company or any 
Subsidiary for "cause" (as defined in the Plan), this Option will remain 
exercisable to the extent exercisable as of such termination for a period of 
three months after such termination (but in no event will this Option be 
exercisable after the Time of Termination).

     (d)  A change in the Optionee's status from that of an employee of the 
Company or any Subsidiary to that of a non-employee consultant or advisor of 
the Company or any Subsidiary will, for purposes of the Plan, be deemed to 
result in a termination of the Optionee's employment with the Company and its 
Subsidiaries, unless the Committee otherwise determines in its sole 
discretion.

     3.3  CHANGE IN CONTROL.  If any events constituting a Change in Control 
(as defined in the Plan) of the Company will occur, then this Option, if it 
has been outstanding for at least six months from the Date of Grant, will 
become immediately exercisable in full and will remain exercisable in 
accordance with the terms of this Agreement.

     3.4  BREACH OF CONFIDENTIALITY OR NONCOMPETE AGREEMENTS.  
Notwithstanding anything in this Agreement to the contrary, in the event that 
the Optionee materially breaches the terms of any confidentiality or 
noncompete agreement entered into with the Company or any Subsidiary, whether 
such breach occurs before or after termination of the Optionee's employment 
with the Company or any Subsidiary, the Committee in its sole discretion may 
immediately terminate all rights of the Optionee under the Plan and this 
Agreement without notice of any kind.

ARTICLE 4.  MANNER OF OPTION EXERCISE.

     4.1  NOTICE.  This Option may be exercised by the Optionee in whole or 
in part from time to time, subject to the conditions contained in the Plan 
and in this Agreement, by delivery, 


                                       2

<PAGE>

in person, by facsimile or electronic transmission or through the mail, to 
the Company at its principal executive office in St. Paul, Minnesota 
(Attention:  Vice President-Human Resources), of a written notice of 
exercise.  Such notice will be in a form satisfactory to the Committee, will 
identify the Option, will specify the number of Option Shares with respect to 
which the Option is being exercised, and will be signed by the person or 
persons so exercising the Option.  Such notice will be accompanied by payment 
in full of the total purchase price of the Option Shares purchased.  In the 
event that the Option is being exercised, as provided by the Plan and Section 
3.2 above, by any person or persons other than the Optionee, the notice will 
be accompanied by appropriate proof of right of such person or persons to 
exercise the Option.  As soon as practicable after the effective exercise of 
the Option, the Optionee will be recorded on the stock transfer books of the 
Company as the owner of the Option Shares purchased, and the Company will 
deliver to the Optionee one or more duly issued stock certificates evidencing 
such ownership. In the event that the Option is being exercised, as provided 
by resolutions of the Committee and Section 4.2 below, by tender of a Broker 
Exercise Notice, the Company will deliver such stock certificates directly to 
the Optionee's broker or dealer or their nominee.

     4.2  PAYMENT.  At the time of exercise of this Option, the Optionee will 
pay the total purchase price of the Option Shares to be purchased solely in 
cash (including a check, bank draft or money order, payable to the order of 
the Company); provided, however, that the Committee, in its sole discretion, 
may allow such payment to be made, in whole or in part, by tender of a Broker 
Exercise Notice, Previously Acquired Shares or by a combination of such 
methods. For purposes of this Agreement, the terms "Broker Exercise Notice" 
and "Previously Acquired Shares" will have the meanings set forth in the 
Plan.  In the event the Optionee is permitted to pay the total purchase price 
of this Option in whole or in part with Previously Acquired Shares, the value 
of such shares will be equal to their Fair Market Value on the date of 
exercise of this Option.

ARTICLE 5.  NONTRANSFERABILITY.

     Neither this Option nor the Option Shares acquired upon exercise may be 
transferred by the Optionee, either voluntarily or involuntarily, or 
subjected to any lien, directly or indirectly, by operation of law or 
otherwise, except as provided in the Plan.  Any attempt to transfer or 
encumber this Option or the Option Shares other than in accordance with this 
Agreement and the Plan will be null and void and will void this Option.

ARTICLE 6.  LIMITATION OF LIABILITY.

     Nothing in this Agreement will be construed to (a) limit in any way the 
right of the Company to terminate the employment or service of the Optionee 
at any time, or (b) be evidence of any agreement or understanding, express or 
implied, that the Company will retain the Optionee in any particular 
position, at any particular rate of compensation or for any particular period 
of time.


                                       3

<PAGE>

ARTICLE 7.  WITHHOLDING TAXES.

     7.1  GENERAL RULES.  The Company is entitled to (a) withhold and deduct 
from future wages of the Optionee (or from other amounts which may be due and 
owing to the Optionee from the Company), or make other arrangements for the 
collection of, all legally required amounts necessary to satisfy any federal, 
state or local withholding and employment-related tax requirements 
attributable to the grant or exercise of this Option or otherwise incurred 
with respect to this Option, or (b) require the Optionee promptly to remit 
the amount of such withholding to the Company before acting on the Optionee's 
notice of exercise of this Option.  In the event that the Company is unable 
to withhold such amounts, for whatever reason, the Optionee hereby agrees to 
pay to the Company an amount equal to the amount the Company would otherwise 
be required to withhold under federal, state or local law.

     7.2  SPECIAL RULES.  The Committee may, in its sole discretion and upon 
terms and conditions established by the Committee, permit or require the 
Optionee to satisfy, in whole or in part, any withholding or tax obligation 
as described in Section 7.1 above by electing to tender Previously Acquired 
Shares or a Broker Exercise Notice, or by a combination of such methods.

ARTICLE 8.  ADJUSTMENTS.

     In the event of any reorganization, merger, consolidation, 
recapitalization, liquidation, reclassification, stock dividend, stock split, 
combination of shares, rights offering, divestiture or extraordinary dividend 
(including a spin-off), or any other change in the corporate structure or 
shares of the Company, the Committee (or, if the Company is not the surviving 
corporation in any such transaction, the board of directors of the surviving 
corporation), in order to prevent dilution or enlargement of the rights of 
the Optionee, will make appropriate adjustment (which determination will be 
conclusive) as to the number, kind and exercise price of securities subject 
to this Option.

ARTICLE 9.  SUBJECT TO PLAN.

     The Option and the Option Shares granted and issued pursuant to this 
Agreement have been granted and issued under, and are subject to the terms 
of, the Plan.  The terms of the Plan are incorporated by reference in this 
Agreement in their entirety, and the Optionee, by execution of this 
Agreement, acknowledges having received a copy of the Plan.  The provisions 
of this Agreement will be interpreted as to be consistent with the Plan, and 
any ambiguities in this Agreement will be interpreted by reference to the 
Plan.  In the event that any provision of this Agreement is inconsistent with 
the terms of the Plan, the terms of the Plan will prevail.

ARTICLE 10.  MISCELLANEOUS.

     10.1 BINDING EFFECT.  This Agreement will be binding upon the heirs, 
executors, administrators and successors of the parties to this Agreement.


                                       4

<PAGE>

     10.2 GOVERNING LAW.  This Agreement and all rights and obligations under 
this Agreement will be construed in accordance with the Plan and governed by 
the laws of the State of Minnesota without regard to conflicts of laws 
provisions. Any legal proceedings related to this Agreement will be brought 
in an appropriate Minnesota court, and the parties to this Agreement consent 
to the exclusive jurisdiction of the court for this purpose.

     10.3 ENTIRE AGREEMENT.  This Agreement and the Plan set forth the entire 
agreement and understanding of the parties to this Agreement with respect to 
the grant and exercise of this Option and the administration of the Plan and 
supersede all prior agreements, arrangements, plans and understandings 
relating to the grant and exercise of this Option and the administration of 
the Plan.

     10.4 AMENDMENT AND WAIVER.  Other than as provided in the Plan, this 
Agreement may be amended, waived, modified or canceled only by a written 
instrument executed by the parties hereto or, in the case of a waiver, by the 
party waiving compliance.

     The parties to this Agreement have executed this Agreement effective the 
day and year first above written.

                                  ECOLAB INC.
     
                                  By: /s/ Diana Doshon Lewis
                                  Its     Vice President, Human Resources
                                      -----------------------------------

[By execution of this             OPTIONEE
Agreement, the Optionee
acknowledges having
received a copy of                /s/ Allan L. Schuman 
the Plan.]                        --------------------------------------
                                           (Signature)  
                                           Allan L. Schuman
                                           9349 Olympia Dr.
                                           Eden Prairie, MN  55347
                                           SSN:   ###-##-####


                                       5


<PAGE>

                                                                    Exhibit (15)

Securities and Exchange Commission
450 Fifth Street N.W.
Washington, DC 10549



     RE:  Ecolab Inc. Registration Statements on Form S-8
          (Registration Nos. 2-60010; 2-74944; 33-1664;
          33-41828; 2-90702; 33-18202; 33-55986; 33-56101
          33-26241; 33-34000; 33-56151; 333-18627; 33-39228
          33-56125; 33-60266; 33-65364; 33-59431; 333-18617;
          333-21167; 333-35519; 333-40239 and 333-50969) and
          Ecolab Inc. Registration Statements on Form S-3 
          (Registration Nos. 333-14771 and 333-45295)

We are aware that our report dated July 21, 1998, on our reviews of interim 
financial information of Ecolab Inc. for the periods ended June 30, 1998 and 
1997, and included in the Company's quarterly report on Form 10-Q for the 
quarter ended June 30, 1998, is incorporated by reference in these 
registration statements.  Pursuant to Rule 436(c) under the Securities Act of 
1933, this report should not be considered a part of the registration 
statements prepared or certified by us within the meaning of Sections 7 and 
11 of that Act.

                                   /s/ PricewaterhouseCoopers LLP
                                   PRICEWATERHOUSECOOPERS LLP



Saint Paul, Minnesota
August 12, 1998


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THE CONSOLIDATED BALANCE SHEET AS OF JUNE 30, 1998 AND THE RELATED
STATEMENTS OF INCOME AND CASH FLOWS FOR THE SIX MONTH PERIOD THEN ENDED
AND IS QUALIFIED BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          27,242
<SECURITIES>                                         0
<RECEIVABLES>                                  259,420
<ALLOWANCES>                                    11,637
<INVENTORY>                                    153,275
<CURRENT-ASSETS>                               499,269
<PP&E>                                         833,363
<DEPRECIATION>                                 436,905
<TOTAL-ASSETS>                               1,398,811
<CURRENT-LIABILITIES>                          412,760
<BONDS>                                        240,382
                                0
                                          0
<COMMON>                                       143,210
<OTHER-SE>                                     423,898
<TOTAL-LIABILITY-AND-EQUITY>                 1,398,811
<SALES>                                        904,822
<TOTAL-REVENUES>                               904,822
<CGS>                                          406,025
<TOTAL-COSTS>                                  406,025
<OTHER-EXPENSES>                               381,337
<LOSS-PROVISION>                                     0<F1>
<INTEREST-EXPENSE>                              12,581
<INCOME-PRETAX>                                106,654
<INCOME-TAX>                                    44,764
<INCOME-CONTINUING>                             68,277
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    68,277
<EPS-PRIMARY>                                     0.53
<EPS-DILUTED>                                     0.51
<FN>
<F1>The Amount Of "Loss Provision" Is Not Significant And Has Been Included In
"Other Expenses".
</FN>
        

</TABLE>


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