Orange County Health Department offers Mosquito Control Resources and Education to Aid in Disease Prevention

Summer is in full swing, and the mosquitoes are out in force. The Orange County Health Department is proactively working to provide residents with the information and resources necessary to help protect them from the variety of diseases spread through mosquito bites. Mosquitoes can carry a variety of diseases including: Zika, West Nile Virus, Chikungunya, Dengue, and Eastern Equine and Lacrosse Encephalitis.

Orange County residents can stop by one of the health department’s three locations to pick up mosquito dunks to treat areas of standing water. The dunks are being given away on a first-come, first-serve basis with a limit of two packs.

The mosquito dunks are also available for purchase at most home improvement and hardware stores.  Mosquito dunks are an effective form of mosquito control because they kill larvae before they mature into biting adults. Dunks contain naturally occurring bacteria that are toxic to mosquito larvae but are not harmful to other wildlife or humans. They can treat areas up to 100 square feet and can be broken into pieces to effectively treat smaller areas as well.

The Orange County Health Department has prepared a short video highlighting ways to eliminate breeding areas through tip and toss methods and property awareness and maintenance.

The Health Department placed boxes at the entrance of seven county parks to provide insect repellent to park visitors. The “Spray before you Play” stations will include cans of spray and a sign with instructions in English and Spanish on to how to apply the spray.

The Health Department has a supply of expandable window screens available, limit two per resident. They can be placed in almost any window, no tools required. Different sizes are available, so residents should be able to find a screen appropriate for their window size. Screens will be distributed on a first-come, first-served basis while supplies last at the Health Clinic locations only (not available at Environmental Health).

“We know bugs are going to bite but we are doing what we can to empower our residents to minimize the number of breeding grounds in the county, prevent bites through effective use of repellents, and stay vigilant while enjoying the wonderful outdoor spaces in our county.” said Environmental Health Director Alan Clapp.

Additional tips to reduce exposure to mosquito bites and illness:

  • Wear long-sleeved shirts, long pants, and socks.
  • Wear insect repellent registered with the Environmental Protection Agency. When used as directed, EPA-registered repellents are proven safe and effective, even for pregnant and breast-feeding women.
  • Keep playground equipment and toys away from yard edges and out from under trees.
  • Use air conditioning or make sure windows and door screens are in place and without holes.

Learn more on the Orange County Health Department’s Fight the Bite webpage.

Mosquito Dunk Initiative

It is recommended that you call the health department at (919) 245-2400 before visiting to ensure availability. Orange County Health Department mosquito dunks pick-up locations:


Medical Clinic Front Desk

300 West Tryon Street
Hillsborough, NC

Environmental Health Front Desk

131 West Margaret Lane, Suite 100
Hillsborough, NC

Chapel Hill

Medical Clinic Front Desk
2501 Homestead Road
Chapel Hill, NC