Adult Mosquito Treatment Information

There are currently no adult mosquito treatments scheduled in San Diego County.

The Vector Control Program (VCP) monitors mosquito-related public health risks throughout the County. If an elevated public health risk exists that cannot be reduced by other means, such as eliminating mosquito breeding or preventing larval growth, then the VCP may use an ultra-low-volume insecticide spray (ULV) and other treatments to reduce the number of infected adult mosquitoes. Insecticides that may be used for ULV adult mosquito treatment include Pyrenone 25-5. Truck mounted or backpack sprayers are used to deliver the ULV. Residents in affected areas will be notified at least 1 day prior to ULV treatment.

Mosquito Control and Mosquito-borne Illness Prevention Frequently Asked Questions

Control de Zancudos y Prevención de Enfermedades Ocasionadas por Zancudos Preguntas Frecuentes

Pyrenone 25-5 Label

Pyrenone 25-5 Safety Data Sheet

For more information on Vector Control please call: (858) 694-2888.

For public health questions please call Public Health Epidemiology at: (619) 692-8499.


  (858) 694-2888