Areas where invasive Aedes aegypti mosquitoes have been found in San Mateo County.

Culex mosquitoes are able to carry and spread West Nile virus. Our staff collect mosquitoes from around the County using traps set overnight and baited with carbon dioxide and scent lures. Mosquitoes…

The District provides no-cost control for ground nesting yellowjackets when the location of the nest is known. A yellowjacket nest site looks like a small hole in the ground with many yellowjackets…