Press Release - July 27, 2026 The San Mateo County Mosquito and Vector Control District has recently detected invasive Aedes aegypti mosquitoes in the Friendly Acres neighborhood of Redwood City. The District is checking properties in the area to determine how widespread the Aedes aegypti mosquitoes are in the area.

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…