Vector Control

Adult Mosquito Spray Season

  • Adult mosquito spraying occurs at various times between 7:00 p.m. and 12:00 a.m. Times depend on weather and daylight change throughout the season.
  • Spraying occurs within incorporated villages, focusing on public spaces (parks, schools, camps, fairgrounds).
  • Other events will have focus, including fairs, festivals, holiday events, school activities, or other large gatherings.
  • Efforts will be made to address other problem areas and detected virus locations as the season progresses.

La Crosse Virus

Perry County confirmed the first Ohio human case of La Crosse Virus Disease in 2023.

Larva & Adult Mosquito Control

One of the main incentives that motivates our department to spray is the elimination of the mosquito that transmits the West Nile Virus. The virus causes flu-like symptoms that, in a small percentage of the population, can lead to very serious complications. People who have symptoms — including high fever, headache, muscle aches, vomiting, and loss of appetite — two to 15 days after a mosquito bite should see their doctor and tell them about the encounter.

Mosquito Testing

Part of the Mosquito Control Program consists of mosquito trapping and testing. Periodically during mosquito season, mosquito traps are set at various locations across the county. These traps are designed to capture mosquitoes so they can be counted and sent to the Ohio Department of Health for West Nile Virus testing. These tests help our department focus mosquito control practices on certain areas of need or where viruses are present.

How Can I Protect My Family and Myself?

Mosquito viruses cannot be transferred from person to person, so the best way to prevent mosquito-borne illnesses is to protect yourself:

  • Avoid outdoor activities, if possible, during peak mosquito hours (dusk, dawn, and after dark).
  • Wear light-colored, loose-fitting clothing.
  • Use approved mosquito spray on skin and clothing — products containing DEET work most effectively against mosquitoes.
  • Remove all standing water from around your house and yard (barrels, planters, gutters).

For more information, check the Ohio Department of Health's website or contact the Health Department.

Vector-Borne Disease Surveillance

For vector-borne disease surveillance information, including updates on tick-borne diseases and travel-associated (imported) vector-borne disease cases, visit the Ohio Department of Health, updated every Friday.

ODH Vector-Borne Disease Update — odh.ohio.gov/vectorupdate