Mosquito Control: 2026 History
| Control Date | Area(s) | Reason | Notes |
|---|---|---|---|
| 6/12/26 | Antioch | Invasive Aedes aegypti Mosquitoes |
Due to the detection of the invasive species Aedes aegypti mosquito in the area, the Contra Costa Mosquito and Vector Control District (District) will be using truck-mounted, Wide Area Larvicide Spray equipment to control larval mosquitoes in the following area: Antioch.
DATE: Friday, June 12, 2026
TIME: Between 3:00 a.m. and 6:00 a.m., weather permitting.
The area to be treated is bordered on the north by Mountaire Drive and Ashburton Drive; on the south by Brookside Drive and Burwood Way; on the east by Barmouth Drive; and on the west by Garrow Drive.
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MATERIALS USED: The public health pesticide to be used is VectoBac WDG, which is a bacterial larvicide that only impacts mosquito larvae — the young mosquitoes as they grow in the water. This bacterial larvicide does not impact other insects or animals. The public health pesticide will be applied at a rate of 8 ounces per acre by truck-mounted Wide Area Larvicide Spray equipment.