We conduct adult mosquito control treatments ('adulticiding') when we detect West Nile virus in local mosquitoes. These treatments reduce the risk of human infection with West Nile virus. Sign up online for email alerts or call 650-344-8592 to request to be added to the email notification list.

**Any scheduled treatment may be postponed, cancelled or rescheduled due to unfavorable weather conditions and/or other reasons**

Scheduled Adult Mosquito Control Treatments:

No adult mosquito control treatments are scheduled at this time.

Completed Adult Mosquito Control Treatments:

No treatments have been conducted this year.

Page last reviewed: October 16, 2024