ECOLAB INC. — Director's Dealing 2007

Jul 26, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC (ECL)
CIK: 0000031462
Period of Report: 2007-07-24

Reporting Person: LEWIS DIANA D (SVP - Human Resources)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-07-24	Common Stock	M	14800	$10.945	Acquired	108290.704	Direct
2007-07-24	Common Stock	F	7309	$44.12	Disposed	100981.704	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-07-24	Employee Stock Option (Right to Buy)	$10.945	M	14800	Disposed	2007-08-15	Common Stock (14800)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	11952.166	Indirect

Footnotes

F1: Reflects the reporting person's payment of the exercise price and withholding taxes for a stock option issued in accordance with Rule 16b-3 by withholding shares of Ecolab Common Stock.

F2: Number of UNITS owned by the reporting person in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2007. Includes 198.929 UNITS acquired since the reporting person's last report. (The 11,952.166 UNITS are equivalent to approximately 22,322 SHARES of the Issuer's Common Stock.)

F3: Option granted under the Ecolab Inc. 1997 Stock Incentive Plan on August 15, 1997. The option was originally reported as covering 7,400 shares at an exercise price of $21.890625/share, but has been adjusted to reflect a stock split on June 6, 2003. The option became exercisable, on a cumulative basis, as to 25% of the total shares subject to the Option (excluding any fractional portion less than one share), on each of the first, second and third anniversaries of the date of grant and as to the remaining shares on the fourth anniversary of the date of grant.