- Author: Niamh M Quinn
- Author: Roger A Baldwin
- Author: Carolyn Whitesell

With the passing of law AB 1322 in 2023 and the recent passing of AB 2552 in September 2024, the options for managing California ground squirrels using lethal methods in urban areas will be more limited. Despite these changes, there are still some viable options available for managing California ground squirrels.
Fumigants
Fumigation can be challenging in urban areas due to the risk of toxic gases leaking into buildings through burrows. However, some burrow fumigants can be used effectively if applied at a safe distance from structures. Be sure to consult the fumigant label for specific usage criteria. Fumigants are lethal to any animal residing within the burrow.
Beginning July 2023,...
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The common insecticide imidacloprid, and the related active ingredients acetamiprid, clothianidin, dinotefuran, and thiamethoxam, belong to the pesticide group neonicotinoids. Neonicotinoids have been linked to the decline in honey bee and other pollinator populations. To address these concerns, the California legislature recently put into law AB 363.
Starting January 1, 2025, neonicotinoid pesticides in California for non-agricultural outdoor use will only be available for sale at licensed pest control dealers and limited for possession and use by certified pesticide applicators. Sale of neonicotinoids in retail nurseries and garden centers and the possession or use of these pesticides by unlicensed applicators will no...