From Consumer Wiki
The Department of Pesticide Regulation evaluates pesticide usefulness and safety and enforces state/federal laws governing the use of pesticides in California's agriculture, industry, business, and home.
Department of Pesticide Regulation
830 K Street, Room 307
Sacramento, CA 95814-3510
(916) 324-1452 Fax
Consumers can contact the California Environmental Protection Agency (Cal/EPA) for information on regulations and health concerns.
California Environmental Protection Agency (Cal/EPA)
555 Capitol Mall, Room 525
Sacramento, CA 95814