- 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...
- Author: Belinda J. Messenger-Sikes
- Author: Karey Windbiel-Rojas

[Article modified on April 13, 2019 to correct inaccuracies.]
New label changes will alter how fipronil is applied by pest management professionals (PMPs) in urban environments, particularly between November and February, during California's typical rainy season.
Concerns over continued detections in urban watersheds of fipronil, a broad-spectrum insecticide commonly used against ants and other pests, led to the California Department of Pesticide Regulation (DPR) asking certain pesticide manufacturers to modify the labels of liquid formulations of fipronil to reduce negative impacts of this pesticide on the environment. These use restrictions apply to surface...

From the California Department of Pesticide Regulation (DPR)
Halloween is upon us, and what better time to resurrect some chilling stories from this year that highlight consumers misusing pesticides with disastrous results!
These cautionary tales are merely a sample of the preventable deaths, unnecessary sicknesses, hospitalizations, and serious injuries reported to the California Department of Pesticide Regulation (DPR) this year.
Unfortunately, these stories are real – not fiction – and they highlight the importance of heeding warning signs, properly storing pesticides, and following pesticide label...
- Author: Cheryl Reynolds
![UC IPM online course[6] copy](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/38274small.jpg)
[From the December 2016 issue of the UC IPM Green Bulletin]
School is already back in session for many children in districts throughout California, and several others will be starting back to school in the next couple of weeks. While students and teachers were enjoying summer break, an amendment to the Healthy Schools Act (HSA) went into effect on July 1st. It requires teachers, custodians, administrators, other staff or volunteers, and licensed pest management professionals applying any pesticide (this includes disinfectants and...
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