With the detection of Aedes aegypti mosquitos in the City of Antioch, the Contra Costa Mosquito Vector Control District announced it will perform larval control measures on October 31.
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, CA.
- DATE: Friday, October 31, 2025
- TIME: Between 3:00 a.m. and 6:00 a.m., weather permitting.
- LOCATION: Antioch, CA which include the areas to be treated is bordered on the north by Mountaire Dr. and Ashburton Dr.; on the south by Brookside Dr. and Burwood Way; on the east by Barmouth Dr.; and on the west by Garrow Dr.
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.
The Contra Costa Mosquito and 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 including managing vector habitat, biological control such as mosquitofish, and chemical control such as public health pesticides.
The majority of the District’s mosquito control is completed when mosquitoes are still in their aquatic form, in their water source. We use only those products registered with the Environmental Protection Agency (EPA) and California Department of Pesticide Regulation (DPR) for the use of mosquito control and protecting public health. They are applied by our trained and certified technicians according to label instructions.
Previous
- Oct 6 – Larval Mosquito Control to Take Place in Antioch
- Oct 2 – More Aedes Aegypti Found in Antioch
- July 31, 2025 – Why It’s So Important to Prevent the Invasive Ades Aegypti Mosquito
- May 9, 2025 – Invasive Mosquitoes Found in Antioch
- Oct 21, 2024 – Larval Mosquito Control to Take Place in Antioch
- Oct 11, 2024 – More Invasive Mosquitoes Found this Week in Antioch
- Aug 27, 2024 – Invasive Aedes Aegypti Mosquito Found Again in Contra Costa County
