Pests to know in Cincinnati
Termites in Cincinnati
OSU Extension says eastern subterranean termites in Ohio swarm in spring and early summer, and shed wings indoors signal an active infestation.[5]
Invasive species reported here
Spotted lanternfly is now designated a destructive plant pest under Ohio law, and a February 2026 order placed the entire state under quarantine.[6]
Pests local experts flag
Cincinnati handles neighborhood rodent complaints and sewer rat-baiting complaints as separate Health Department services, and also takes calls about bats and starlings.[2]
Climate
Central Cincinnati (ZIP 45202) is in USDA plant hardiness zone 6b, where the average coldest winter night is -5 to 0°F.[10]
Public agencies that handle pests
- The Cincinnati Health Department runs a Vector Control Program that includes mosquito surveillance and control for West Nile, Zika, St. Louis and Eastern encephalitis viruses.[1]
- Cincinnati registered environmental health specialists investigate complaints of mosquitoes or stagnant water in places like catch basins, gutters, bird baths and unused pools.[1]
- The Cincinnati Health Department places surveillance traps across the city to collect mosquitoes for disease testing; standing-water requests go through 311Cincy.[1]
- The Cincinnati Health Department offers tick identification kits and educational brochures to residents and physicians.[3]
- Hamilton County Public Health routinely traps mosquitoes throughout the county and sends them to the Ohio Department of Health's Zoonotic Disease Laboratory for West Nile testing.[4]
Hiring a licensed company
In Ohio, restricted-use pesticides may only be sold to and used by licensed private or commercial applicators, or trained servicepersons under a licensed applicator's direct supervision.[7]
Free local help
OSU Extension counts 65 mosquito species in Ohio, but only six pose a disease-transmission threat to people and domestic animals.[8]
Through the year
- Winter to Fall
- In Ohio, spotted lanternfly lays eggs from October through December, nymphs usually hatch in April, and adults appear in late June and stay active until winter.[6]
- Spring to Fall
- OSU Extension notes that county and local health offices in Ohio collect and test mosquitoes for West Nile virus from May to September.[9]
Sources
- Cincinnati Health Department, “Mosquito Control Program.” www.cincinnati-oh.gov/health/chd-programs/environmental-health/mosquito-control-program/ (accessed 2026-10-06)
- Cincinnati Health Department, “Services.” www.cincinnati-oh.gov/health/contact-us/services/ (accessed 2026-10-06)
- Cincinnati Health Department, “Ticks and Tickborne Disease.” www.cincinnati-oh.gov/health/public-health-hot-topics/ticks-and-tickborne-disease/ (accessed 2026-10-06)
- Hamilton County Public Health, “West Nile Virus Detected in Hamilton County Mosquitoes.” hamiltoncountyhealth.org/announcement/what-to-know-about-west-nile-virus-in-hamilton-county-mosquitoes/ (accessed 2026-10-06)
- Ohio State University Extension, Buckeye Yard & Garden onLine, “Eastern Subterranean Termite, Reticulitermes flavipes (Isoptera: Rhinotermitidae).” bygl.osu.edu/node/2351 (accessed 2026-10-06)
- Ohio Department of Agriculture, “Spotted Lanternfly.” agri.ohio.gov/divisions/plant-health/invasive-pests/invasive-insects/slf (accessed 2026-10-06)
- Ohio Department of Agriculture, “Pesticides.” agri.ohio.gov/divisions/plant-health/pesticides (accessed 2026-10-06)
- Ohio State University Extension (Ohioline), “How to Control and Prevent Mosquito Bites In and Around Ohio Homes (ENT-88).” ohioline.osu.edu/factsheet/ent-88 (accessed 2026-10-06)
- Ohio State University Extension (Ohioline), “Northern House Mosquito (ENT-89).” ohioline.osu.edu/factsheet/ent-89 (accessed 2026-10-06)
- USDA ARS and PRISM, via phzmapi.org, “Plant hardiness zone for ZIP 45202 (2023 USDA map data).” phzmapi.org/45202.json (accessed 2026-10-06)
- National Pesticide Information Center, “State Pesticide Regulatory Agencies.” npic.orst.edu/reg/state_agencies.html (accessed 2026-10-06)