ECOLAB INC. — Director's Dealing 2004

Aug 3, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALCIDE CORP (ALCD)
CIK: 0000708484
Period of Report: 2004-07-30

Reporting Person: ECOLAB INC (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-07-30	Common Stock	P	2721683	$21.00	Acquired	0	Direct

Footnotes

F1: Shares were acquired by the reporting person in connection with the merger of Alcide Corporation with a wholly-owned subsidiary of the reporting person. In lieu of cash, each Alcide shareholder will receive .6744 shares of the reporting person's Common Stock (valued at $31.14 per share) for each Alcide share owned by such shareholder.

F2: All of Alcide Corporation's outstanding stock was canceled in a merger of Alcide with a wholly-owned subsidiary of the reporting person on July 30, 2004.