Mosquito Fogging Set for Discovery Bay on Tuesday Evening

Due to the detection of West Nile virus in mosquitoes in the Discovery Bay area, the Contra Costa Mosquito & Vector Control District will be fogging by truck-mounted, ultra-low volume sprayers to control adult mosquitoes.
DATE:  Tuesday, August 1, 2017
TIME: Between 9:30 p.m. and 12:30 a.m., weather permitting.
Location:Discovery Bay
The area to be treated is bordered on the north by Lakeview Circle and Castle Rock Loop; on the south by Wilde Drive and Wilde Court; on the east by Open Fields; and on the west by Bixler Road.
MATERIALS USED:  The insecticide to be used is Zenivex E4, RTU  applied at a rate of 1.5 ounces per acre by truck-mounted, ultra-low volume sprayers.
MAP:  (For an interactive map, please click here  – available shortly after this notification is published)


The Contra Costa Mosquito & Vector Control District utilizes an integrated vector management program which means we use a variety of protocols for controlling mosquitoes. These protocols include public education, physical control such as managing vector habitat, biological control such as mosquitofish, and chemical control such as pesticides.

The majority of the District’s mosquito control is completed when mosquitoes are still in their aquatic form, in their water source. Once mosquitoes emerge from the water as adults, the only effective method to control them is by fogging. We use only those products registered with the Environmental Protection Agency for the use of mosquito control and protecting public health. They are applied by our trained and certified technicians.