Mosquito Control Program

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Hours of operation: Monday - Friday 8:00 a.m. until 4:30 p.m. 
Office is located at 401 Lafayette Street, Williamsburg, VA 23185 

Keep Informed - The Centers for Disease Control (CDC) and the Virginia Department of Health are monitoring Zika cases. Zika is a disease that is spread mostly by the bite of an infected mosquito. Learn how you can protect yourself from Zika and how to recognize Zika symptoms by visiting the  CDC's website  .

The City of Williamsburg Mosquito Control Program and You

The City of Williamsburg Mosquito Control Program is aimed at protecting public health by reducing the number of mosquitoes during mosquito season June through September.  Program includes: fogging/spraying residential areas from public streets at dusk.  Mosquito activity and the need to fog certain areas are monitored by our Mosquito Technician.  Weekly monitoring is done by site inspections, activity of mosquito traps placed throughout the city and citizen complaints.  If an area is warranted, fogging will be conducted contingent upon weather conditions such as rain or high winds.  Citizen concerns and onsite yard inspections are available by requests at or 220-6140.  

Mosquito Truck

Did you know?

  • The entire life cycle from egg to adult can be completed in less than 10 days.  Most species live about 2 weeks.
  • Only female mosquitoes bite.  They require a "blood meal" in order to develop eggs to breed more mosquitoes.
  • They can fly up to 10 mph, dart between raindrops, and even fly backwards.
  • One discarded tire full of water can potentially produce tens of thousands of mosquitoes over a season.

What are the most common sources of mosquito breeding habits in and around your home?

The majority of mosquito problems around the house can be traced to small containers that hold water for a least one week.  Old bottles, cups, pet bowls, flowerpot water trays, birdbaths, tree holes and old tires are very good locations for mosquitoes to breed.  Leaf-filled gutters are also particularly good places for mosquitoes to breed.

Mosquito Breeding

What are the top ten ways YOU can reduce the number of mosquito breeding habitats around your home?

1.  Change the water in birdbaths at least once or twice a week.

2.  Clean leaf-filled drains to allow proper drainage.

3.  Fill in or drain any low places (puddles, ruts) in yard.

4.  Clean leaf-filled gutters to allow proper drainage.

5.  Keep grass cut short and shrubbery well-trimmed around the house so adult mosquitoes will not have a place to hide. 

6.  Change water in ornamental ponds and fountains at least once a week.

7.  Clean roof areas to allow proper drainage.

8.  Make sure your backyard pool is properly cared for while on vacation.

9.  Turn buckets, baby pools, boats and other outside containers upside down when they are not in use.

10. Screen or cover rain barrels, garbage cans and other large containers.  And properly dispose of old tires.

11. Repair leaky water faucets, water hoses and air conditioners.

What does the City use to control Mosquitoes?

We use a sustained release mosquito growth regulator larvacide called Altosid (pellets & briquettes) to prevent adult mosquito emergence.  Altosid is used in storm drains, catch basins, roadside ditches, and standing water that have potential to breed mosquitoes.

For our spraying during the months of June-September we use Duet, an advanced dual-action mosquito adulticide that combines the proven efficacy of Sumithrin and Prallethrin.  Together, these two active ingredients provide a unique, effective and faster way to control mosquitoes yet biodegrade rapidly.  Both are synthetically produced to emulate naturally occurring pyrethrins found in the chrysanthemum flower.

Would you like an on-site yard inspection?

A City employee will come out to inspect your yard for high mosquito activity.  Please call our office to set up an appointment at 757-220-6140 or .

Have a mosquito concern or question?

Please call 757-220-6140 or .


Mosquito-Related Links

Virginia Department of Health

Virginia Mosquito Control Association

American Mosquito Control Association

Center for Disease Control and Prevention

EPA Pesticides and Mosquito Control

Clarke Mosquito Control  800-942-2555 Mosquito Hotline  or