ECOLAB INC. — Director's Dealing 2010

Jul 30, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC (ECL)
CIK: 0000031462
Period of Report: 2010-07-29

Reporting Person: FRITZE STEVEN L (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-07-29	Common Stock	M	20851	$43.24	Acquired	93613	Direct
2010-07-29	Common Stock	F	19468	$48.895	Disposed	74145	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-07-29	Employee Stock Option (Right to Buy)	$43.24	M	20851	Disposed	2010-08-18	Common Stock (20851)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	12345.190	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 in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of June 30, 2010. Includes 41.591 UNITS acquired since the reporting person's last report. (The 12,345.190 UNITS are the equivalent of approximately 23,066 SHARES of the issuer's Common Stock.)