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Pesticide Use Enforcement

The Marin County Department of Agriculture oversees the use of pesticides in Marin County.

About Pesticide Use Enforcement

We are committed to protecting our community and environment by ensuring pesticides are handled and stored properly, and commercial applicators are trained and licensed.

  • Whenever pesticides are being used (or stored) at our homes, along our roads, or on our farms, we have the authority to go there and conduct inspections. These inspections help ensure that California-approved pesticides are being used safely and stored properly.
  • We make sure that commercial pesticide users are trained and licensed to conduct their work safely.
  • We immediately investigate pesticide related complaints and potential illnesses to determine what happened so that we can help prevent it from happening again.
  • “Pesticide” is a general term that includes “Herbicides” (weed control), “Insecticides” (insect control), “Fungicides” (fungus control), and “Rodenticides” (rodent control), etc.

Pesticide Registration Bulletins

Optional Content

For information regarding announcement(s) and related information from our department please read the following current and past letters to industry:

The documents in this list may not work with all assistive technology and are being remediated. For alternative formats, please email Agriculture, Weights and Measures or phone 415-473-6700. To use the California relay service, dial 711.

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Page last updated on January 5, 2026.