Mosquito Fogging Map/Schedule
Click HERE.

About Adulticiding in Franklin County

Adulticiding is the application or treatment of pesticides to exterminate adult mosquitoes.  The most common way to apply these pesticides is using truck-mounted ultra-low volume spray units driven on public roadways.  Adulticiding is one of the tools we have in order to control and manage mosquito populations. When done properly, adulticiding is an effective way to reduce the numbers of mosquitoes and reduce people's risk of contracting mosquito-borne diseases.  It is important to apply these pesticides when mosquitoes are most active.  For the species that carry West Nile virus, it is best to apply adulticide just before sunset and for the next several hours that follow.  Licensed and trained staff apply adulticide intended specifically for mosquito control.  The pesticides are registered with the U.S. EPA and Ohio Department of Agriculture, and are applied according to federal and state laws.

The Franklin County Board of Health’s ultra-low-volume (ULV) spray machines are computer controlled, GIS equipped and calibrated to apply extremely small amounts of adulticide over large areas.  The droplet size of the pesticide applied in the spray is small enough to be lethal to mosquitoes, but will not adversely affect other insects.

The adulticide applied by our truck mounted units do not persist in the environment for very long; they naturally break down within hours, will decompose as they are exposed to air, and are destroyed rapidly by sun light. The morning after an application, the amount of residual adulticide on exterior surfaces will be negligible.

Want to know what adulticides we use?  click HERE.

Barrier Treatments
With the summer months come festivals, fireworks, movie nights, and other outdoor events.  To help everyone better enjoy these events we provide barrier treatments for these city, village or township activities in addition to typical adulticiding.  In a barrier treatment, chemical is sprayed on the foliage surrounding an open area such as a park or fairground.  The chemical is designed to cling to leaves.  As mosquitoes land on the treated areas, they are killed. Under ideal conditions, this treatment can last a week or more.   

To greatly reduce your exposure to pesticides during and after adulticiding operations, please take the following precautions:

• Check this website for notices about adulticiding in your area.  We will make all attempts to post our spray schedule and a map of the spray areas 24 hours in advance of the application.
• Remain indoors with the windows closed when adulticiding is taking place (if possible).  Typically, windows can be reopened within 30 minutes after our trucks have passed.
• Bring pets indoors, cover ornamental fish ponds during adulticiding hours to avoid direct exposure.
• If you come in direct contact with pesticides, wash well any exposed skin surfaces with soap and water.
• Outdoor tables, furniture, toys, and play equipment can also be covered or can be rinsed off with water following the application, but this is not necessary.
• Bring laundry inside before adulticiding begins.  If these items are exposed, they may be washed again in soap and water.
• Wash any exposed fruits and vegetables with water before eating, cooking or storing.
• Allow about one hour to pass before allowing children play in areas that have been treated.
• For your safety and the safety of our operators do not approach or walk up to a spray truck.  If you are in your car do not follow a spray truck when it is operating.  If you are in a vehicle, raise the windows, turn on the air conditioning (on recirculation mode), wait for the truck to pass or find an alternate route.