-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 qGFH+uhDT8vMe8i3f6Dkcg==

<SEC-DOCUMENT>/in/edgar/work/0000912057-00-046012/0000912057-00-046012.txt : 20001027
<SEC-HEADER>0000912057-00-046012.hdr.sgml : 20001027
ACCESSION NUMBER:		0000912057-00-046012
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20001026

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ECOLAB INC
		CENTRAL INDEX KEY:			0000031462
		STANDARD INDUSTRIAL CLASSIFICATION:	 [2840
]		IRS NUMBER:				410231510
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231
</COMPANY-DATA>

		FILING VALUES:
			FORM TYPE:		424B3
			SEC ACT:		
			SEC FILE NUMBER:	333-35378
			FILM NUMBER:		746267
</FILING-VALUES>

			BUSINESS ADDRESS:	
				STREET 1:		ECOLAB CTR
				STREET 2:		370 N WABASHA ST
				CITY:			ST PAUL
				STATE:			MN
				ZIP:			55102
				BUSINESS PHONE:		6122932233
</BUSINESS-ADDRESS>

				FORMER COMPANY:	
					FORMER CONFORMED NAME:	ECONOMICS LABORATORY INC
					DATE OF NAME CHANGE:	19861203
</FORMER-COMPANY>
</FILER>
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>a2028632z424b3.txt
<DESCRIPTION>424B3
<TEXT>

<PAGE>

                                                FILED PURSUANT TO RULE 424(b)(3)
                                                             FILE NO. 333-35378


SUPPLEMENT TO
PROSPECTUS DATED MAY 8, 2000



                                   ECOLAB INC.

                         424,111 SHARES OF COMMON STOCK


         This document supplements the Prospectus, dated May 8, 2000, relating
to the proposed sale of up to 424,111 shares of common stock.

         On October 9, 2000, Bobby Cheney, who was identified in the Prospectus
as beneficially owning 333,288 of the offered shares, transferred 50,000 of
those shares to two trusts. The name of each transferee and the number of shares
transferred are indicated below:

<TABLE>
<CAPTION>

                                                          Shares
         Transferee                                       Transferred
         ----------                                       -----------
         <S>                                              <C>
         The Robert J. Cheney 2000
         Retained Annuity Trust(1)                        25,000

         The Carolyn Gail Cheney 2000
         Retained Annuity Trust(2)                        25,000
</TABLE>

            (1) Robert J. Cheney is the Trustee of this trust.
            (2) Carolyn Gail Cheney is the Trustee of this trust.

         Each of these transferees will be a "Selling Stockholder" under the
Prospectus and the shares transferred to them will be covered by the Prospectus.
The table on page 6 of the Prospectus is amended to add the information provided
above.

           THE DATE OF THIS PROSPECTUS SUPPLEMENT IS OCTOBER 26, 2000
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
