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Mosquito Control

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More than 28 inches (and counting) of rainfall measured so far this year have created pools of standing floodwaters ideal for mosquito breeding in Central Ohio. To help combat aggressive floodwater mosquitoes, Franklin County Public Health has opted to temporarily use Duet, a dual-action product, proven effective in drawing a wide variety of adult mosquito species from their resting state and providing exceptional knockdown. Read more.

See if your area will be treated with Franklin County Public Health's interactive Mosquito Spray map below:

Map of Westerville Trap Zones | View Post-Spray Maps, Information

For a helpful list of mosquito prevention tips, please visit the Franklin County Public Health website.  

The City of Westerville participates in a joint contract with Franklin County Public Health (FCPH) for mosquito control services. The current contractor is Clarke Environmental Mosquito Management, Inc. (Clarke).  

Area-Wide Treatment

Each year Clarke will do an evaluation of the topography of the community and where pools are found in order to determine testing locations. Generally, they will set traps in approximately three to five locations throughout the community.  Additional traps will be set out this year in an effort to reduce the number of nuisance areas.  If West Nile virus is found, an area-wide treatment, spraying, is performed in that area. Spraying may also be performed when West Nile virus is not present but there are large numbers of mosquitoes found. When the spraying is performed, approximately 20 road miles are driven. For information on chemicals used, please see the FCPH web page link above. All chemicals used are environmentally friendly. There is a form on the FCPH web page to request that the contractor not treat at your property.  

Individual Locations

Clarke also deals with individual requests for services. When a request is received, Clarke will generally meet with the resident to perform a visual survey of the property to help minimize locations where larvae might form. If larvae are found, a barrier treatment may be performed at the affected property.

The overall goal of this program is to develop a system that reduces the mosquito population in the City of Westerville and has little or no impact on the environment of the treated areas. Additionally, the information provided here is designed to provide a level of comfort for the citizens of Westerville that the program is designed to reduce a nuisance and a potential health problem.

Any further questions on the mosquito control program should be directed to the Public Service Department at (614) 901-6740.

Mosquito Safety

The Centers for Disease Control and Prevention (CDC) recommends residents take the following precautions to protect themselves and their families:

• Wear insect repellent that has been registered with the Environmental Protection Agency (EPA) and follow package directions.

• Wear long sleeves and pants.

• Eliminate standing water around your home (mosquitoes breed in water and it doesn’t take much time).