Wis. Admin. Code § ATCP 29.02
The following organisms and viruses are declared to be pests when present under circumstances where they may be injurious to persons, property, or the environment:
(3) Microscopic organisms or viruses other than those on or in living animals or humans.
Note: See s. 94.69 (1), Stats. A pesticide may be used against a “pest” only if it is registered and labeled for that purpose and used according to label directions. Pesticide use against certain “pests” may be limited by applicable law.
History: Cr. Register, May, 1998, No. 509, eff. 6-1-98.