Yellowjacket is the common name for several species of wasps. They can become a nuisance around homes, gardens, pools, orchards and parks. They can also pose a health hazard, especially for those who are allergic to their venom. The Contra Costa Mosquito & Vector Control District provides a control program for ground-nesting yellowjackets only.

To request a yellowjacket inspection, please call (925) 685-9301 or submit an online inspection request. A District technician will usually respond within two business days. If you are making a request after business hours (Monday through Friday, 8:00 a.m. to 4:30 p.m.) or on the weekend, please allow for two days for service to occur.

Please attach a map of the property or area showing the location of the nest on your front door and place an obvious marker (old shoe, shovel, etc.) near the nest location so the District employee can locate it easily. To locate the nest, simply observe the area where the yellowjackets exit and return (in the ground, shrubbery, pile of leaves, debris, etc.).


Yellowjacket Control

District-issued brochure detailing how to control yellowjackets. READ MORE.


Reduce the Springtime Sting of Yellowjackets

Have you ever been stung by a yellowjacket? If you have, no doubt you remember it because unlike a bee that stings once, the yellowjacket can sting multiple times. READ MORE.

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