Mosquito Prevention & Vector Control

Metro Health provides mosquito control services on public property within the City of San Antonio limits to protect the residents of and visitors to San Antonio from diseases that these vectors can spread.

Mosquito surveillance involves monitoring mosquito populations to assess their numbers, species, and activity levels. This process helps identify areas with mosquito activity and potential breeding sites, guiding targeted control measures. By tracking mosquito pools, Metro Health can implement more effective strategies to reduce their impact and prevent the spread of diseases. These strategies include fogging for adult mosquitoes and launching communication campaigns about prevention to targeted areas.

Surveillance in the City of San Antonio is conducted from March through October.

2024 West Nile Virus Human Cases

West Nile Positive Mosquito Pools

Learn more about the West Nile Virus on the CDC website.

Mosquito Abatement Notices

Prevention & Removal

NOTE: The Vector Control Program does not treat private property for insect or rodent problems, including mosquitos, bees or bats.

Mosquitos

If you have mosquitoes on your property, they may be originating from your property. Ensure you do not have standing water on the ground or containers holding water. These are common breeding places for mosquitoes.

• How to Prevent Mosquitoes(PDF, 1MB)
• Video: Eliminating Mosquito Breeding Sites

If you have questions, call vector control at 3-1-1 or 210-207-6000.

Bees

Private Residences

If you have bees in the wall of your house, please do not disturb them. Contact a licensed pest control service to remove them from your structure.

City Parks

If you find a beehive in a tree in a City of San Antonio Park, call 3-1-1 or 210-207-6000.

Bee Attack Emergencies

To report emergency problems dealing with bee attacks after business hours, on weekends or holidays, call the San Antonio Fire Department by dialing 9-1-1.

Bats

If you have bats at your residence:

• If the bats are living in an occupied dwelling, it is recommended that they be excluded from the building by sealing all entry points.
• If they are not in an occupied building and are not a threat to humans, bats should be left alone. State Law protects bat species.

The City does not have the authority to treat private property for bats. The Vector Control program can only inspect your private property and make recommendations with the owner’s permission. You will need to hire a private company to treat your property.