The purpose of the program is to reduce the risk of diseases spread by mosquitoes to humans, such as West Nile Virus.
Columbus Public Health (CPH) tracks mosquitoes to monitor the size of mosquito populations and to check for the presence of disease. Below are links to tracking results for this season.
CPH sprays to kill adult mosquitoes in areas with high mosquito counts and disease presence in area parks, bike paths and neighborhoods between 4 a.m. and sunrise, using low toxicity chemicals. Spraying usually begins the first week of July, however it may be earlier depending on mosquito activity.
Treating Standing Water
CPH investigates mosquito complaints and treats standing water to kill mosquitoes before they become adult mosquitoes capable of spreading disease. Special efforts are made to find potential breeding sites, like abandoned tires, to have them removed or treated.
West Nile Virus Information
West Nile Virus is an illness caused by infected mosquitoes and not all mosquitoes carry it. The greatest risk of getting West Nile is from July to mid-September, however a person’s risk of being infected is low.
Currently the Zika virus is not being actively transmitted by mosquitoes in Ohio. However, people can get Zika if they travel to areas where the virus is being actively transmitted. CPH is carefully tracking mosquito activity and Zika cases to guide our mosquito control efforts.
Learn more about how Zika is transmitted.
Reduce Mosquitoes Where You Live
Getting rid of standing water in your yard is key to prevent mosquito growth.
Learn more. Treatment is also offered for Rain Barrels.
Prevent Mosquito Bites
Use an EPA-registered insect repellent and follow the label carefully.
Pesticides are used by employees of Columbus Public Health to minimize mosquito populations in the community. Employees are trained to safely and responsibly use pesticides to reduce mosquito numbers while having little-to-no impact on the environment. Learn more about
Pursuit pesticides here.
Questions or Comments?
Residents may register mosquito related complaints at 614-645-3111 or