Learn about efforts to detect West Nile virus, the current mosquito population in San Mateo County, and non-biting midges.

​After so much rain, many of us are hoping for a few sunny days to spend time outside.  I​f you are spending time in your yard, please check around your yard and home for any containers holding water. Dump out standing water to prevent mosquito breeding. Check for water in plant saucers, buckets, tires, barrels, folds in tarps and grill covers, and any place where water can collect!

Have a rain barrel? Check for mosquito larvae! To prevent mosquitoes from breeding in your rainwater collection containers, cover each container snugly with window screening. Already have larvae or are unsure if you have larvae? We can check! Please fill out a service request or give us a call.

We hope that you and your family are safe as we weather these historic rain storms.  Please keep in mind that mosquitoes can breed year-round, even when it is cool and rainy. Please check around your yard and home for any containers holding water - dump out standing water to prevent mosquito breeding. Check crawlspaces for standing water - water under a house can breed thousands of mosquitoes.