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The Contra Costa Mosquito and Vector Control District announced that it will use truck-mounted micro-devices to control adult mosquitoes due to high mosquito numbers and detection of West Nile virus in the area.

• DATE: Friday, August 9, 2024
• TIME: Between dusk (approx. 8.30pm) and 11pm, weather permitting.
• LOCATION: Big Break Regional Trail, Oakley
• The area to be treated is the Big Break Regional Trail from Piper Ln. in the west to Marsh Creek in the east and behind the adjacent homes Ironhouse Sanitary District Property.

MATERIALS USED: The public health pesticide to be used is Zenivex E4 RTU, applied at a rate of 1.5 ounces per acre using truck-mounted micro-application equipment.

The Contra Costa Mosquito and Vector Control District utilizes an integrated vector management program, which means we use several protocols to control mosquitoes. These protocols include public education, physical control including vector habitat management, biological control such as mosquito fishing, and chemical control such as public health pesticides.

Most mosquito control activities in the District are carried out when the mosquitoes are still in their aquatic form, in their water source. Once mosquitoes emerge from the water as adults, controlling the adult mosquitoes is the only effective method of controlling them. We only use products registered with the Environmental Protection Agency (EPA) and the California Department of Pesticide Regulation (DPR) for mosquito control and public health protection. They are applied by our trained and certified technicians according to the directions on the label.