ECOLAB INC. — Director's Dealing 2007

May 11, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC (ECL)
CIK: 0000031462
Period of Report: 2007-05-09

Reporting Person: GRUNDHOFER JERRY A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-09	Common Stock	M	7400	$24.8325	Acquired	36598.43	Direct
2007-05-09	Common Stock	F	4367	$42.075	Disposed	32231.43	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-05-09	Stock Option (Right to Buy)	$24.8325	M	7400	Disposed	2013-05-09	Common Stock (7400)	Direct
2007-05-09	Stock Option (Right to Buy)	$42.075	A	4367	Acquired	2013-05-09	Common Stock (4367)	Direct

Footnotes

F1: Reflects the reporting person's payment of the exercise price of the stock options issued in accordance with Rule 16b-3 in each case by delivering shares of Ecolab common stock.

F2: The exercise price for the stock options has been halved and the number of shares subject to the options doubled to reflect a 2-for-1 stock split paid June 6, 2003 subsequent to the original reporting of the options.