Pests and pest control in Topeka, KS

Pests to know in Topeka

• Mosquito
• American Dog Tick
• Subterranean termites
• Brown Recluse
• Gulf Coast Tick

Why each one matters here is cited in the sections below.

Termites in Topeka

K-State Research and Extension identifies the eastern subterranean termite as the most common and troublesome termite in Kansas.^[7]

Pests local experts flag

• KDHE lists three medically important ticks commonly met outdoors in Kansas: the lone star tick, American dog tick and blacklegged tick.^[4]
• K-State calls the brown recluse the most publicized and feared spider in Kansas and says it is inactive October through March.^[9]
• A Kansas State University tick guide covers five hard ticks of medical or veterinary importance in Kansas, including the brown dog and Gulf Coast ticks.^[10]

Climate

Central Topeka (ZIP 66603) is in USDA plant hardiness zone 6b, where the average coldest winter night is -5 to 0°F.^[11]

Public agencies that handle pests

• Shawnee County monitors mosquitoes weekly with help from KDHE and the Kansas Biological Survey; surveillance normally runs June through October.^[2]
• The county health department calls West Nile the most common arbovirus in Kansas, citing a range of 14 to 60 Kansas cases reported.^[1]
• KDHE says Culex mosquitoes are the main species of concern in Kansas because they can spread West Nile virus.^[3]

Local rules and responsibilities

Topeka's Property Maintenance Unit enforces codes covering sanitation and weeds on private property; a code official visits within 48 hours of a complaint.^[8]

Hiring a licensed company

Applying any pesticide for pay in Kansas, including herbicide lawn fertilizers, requires a Kansas pesticide business license and at least one certified commercial applicator.^[5]

Licensing agency: Kansas Department of Agriculture — Pesticide & Fertilizer Program^[12].

See also how to check a pest control license.

Free local help

The K-State Research and Extension Shawnee County office serves as a testing site for KDA pesticide applicator certification.^[6]

Through the year

Summer to Fall

Shawnee County's health department says West Nile transmission peaks from the last week of August through the first two weeks of September.^[1]

Spring to Fall

In Kansas, homeowners most often find termite swarmers in early spring, and occasionally in late fall, per K-State.^[7]

Sources

1. Shawnee County Health Department, “Mosquito & Tick Information.” www.snco.gov/hd/mosquito_tick_information.php (accessed 2026-10-06)
2. Shawnee County Health Department, “Mosquito Surveillance in Shawnee County.” www.snco.gov/hd/mosquito_surveillance.php (accessed 2026-10-06)
3. Kansas Department of Health and Environment, “Mosquitoes.” www.kdhe.ks.gov/2240/Mosquitoes (accessed 2026-10-06)
4. Kansas Department of Health and Environment, “Ticks.” www.kdhe.ks.gov/2241/Ticks (accessed 2026-10-06)
5. Kansas Department of Agriculture, “Pesticide and Fertilizer Program.” www.agriculture.ks.gov/divisions-programs/pesticide-fertilizer (accessed 2026-10-06)
6. K-State Research and Extension Shawnee County, “Agricultural Tests Offered Through Office.” www.shawnee.k-state.edu/crops-livestock/Tests_Offered_Through_Office.html (accessed 2026-10-06)
7. K-State Research and Extension, “Termites (MF722).” bookstore.ksre.ksu.edu/pubs/MF722.PDF (accessed 2026-10-06)
8. City of Topeka, “Reporting a Code Enforcement Issue.” topeka.gov/how_do_i/property_maintenance_problem/index.php (accessed 2026-10-06)
9. K-State Research and Extension, “Brown Recluse Spiders (MF3133).” bookstore.ksre.ksu.edu/pubs/MF3133.pdf (accessed 2026-10-06)
10. Kansas State University College of Veterinary Medicine, “Kansas Tick Guide.” keap.kdhe.ks.gov/Ephtm/EphtContent/documents/Kansas%20Tick%20Guide%20KState.pdf (accessed 2026-10-06)
11. USDA ARS and PRISM, via phzmapi.org, “Plant hardiness zone for ZIP 66603 (2023 USDA map data).” phzmapi.org/66603.json (accessed 2026-10-06)
12. National Pesticide Information Center, “State Pesticide Regulatory Agencies.” npic.orst.edu/reg/state_agencies.html (accessed 2026-10-06)