Pests and pest control in Boise, ID

Pests to know in Boise

• Mosquito
• Pocket gophers
• Japanese Beetle
• Subterranean termites

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

Termites in Boise

Subterranean termites are found throughout Idaho except the Panhandle and high mountain country, according to a University of Idaho Extension publication.^[8]

Invasive species reported here

The Idaho State Department of Agriculture runs Japanese beetle eradication programs in Caldwell, west of Boise, and in Pocatello.^[5]

Pests local experts flag

• More than 50 mosquito species live in Ada County; six are West Nile vectors, and only two are considered primary vectors.^[1]
• Ada County's Pest Abatement District controls pocket gophers and rock chucks only in unincorporated areas; Boise and other cities are excluded.^[3]

Climate

Central Boise (ZIP 83702) is in USDA plant hardiness zone 7a, where the average coldest winter night is 0 to 5°F.^[9]

Public agencies that handle pests

• The Ada County Mosquito Abatement District manages disease-carrying mosquitoes across a 406-square-mile district covering mostly residential and urban areas, including Boise.^[1]
• West Nile virus was first detected in Ada County in 2005, and in 2006 Idaho led the nation with nearly 1,000 reported cases.^[1]
• Residents inside the mosquito district pay no service fee, since abatement is funded through property taxes; fogging happens after dusk, when bees are back in the hive.^[2]
• In Idaho, rabies circulates among bats, and about 1 in 100 wild bats has it; bat rabies has turned up in Idaho cats, skunks and a horse.^[6]

Hiring a licensed company

Ada County pest abatement crew leads must hold a pesticide applicator license from the Idaho State Department of Agriculture; no license is needed to set gopher traps.^[4]

Licensing agency: Idaho State Department of Agriculture — Agriculture Resources Division^[10].

See also how to check a pest control license.

Free local help

University of Idaho Extension in Ada County runs a free plant clinic, staffed by Master Gardeners, that identifies insects May through September.^[7]

Through the year

Summer to Fall

In Ada County, West Nile virus spreads through mosquito bites during mosquito season, from summer through fall.^[1]

Winter to Spring

In Idaho, termite swarmers may be seen indoors around windows and lights during late winter or early spring.^[8]

Sources

1. Ada County Weed, Pest and Mosquito Abatement, “Mosquito Overview.” adacounty.id.gov/weedpestmosquito/mosquito-abatement/mosquito-overview/ (accessed 2026-10-06)
2. Ada County Weed, Pest and Mosquito Abatement, “Mosquito Abatement FAQ.” adacounty.id.gov/weedpestmosquito/mosquito-abatement/mosquito-abatement-faq/ (accessed 2026-10-06)
3. Ada County Weed, Pest and Mosquito Abatement, “Pest Control Overview.” adacounty.id.gov/weedpestmosquito/pest-control/pest-control-overview/ (accessed 2026-10-06)
4. Ada County Weed, Pest and Mosquito Abatement, “Pest Control Services.” adacounty.id.gov/weedpestmosquito/pest-control/pest-control-services/ (accessed 2026-10-06)
5. Idaho State Department of Agriculture, “Idaho Japanese Beetle.” agri.idaho.gov/plant-industries/insects-pests/idaho-japanese-beetle/ (accessed 2026-10-06)
6. Idaho Department of Health and Welfare, “Rabies.” healthandwelfare.idaho.gov/health-wellness/diseases-conditions/rabies (accessed 2026-10-06)
7. University of Idaho Extension, Ada County, “Horticulture in Ada County.” www.uidaho.edu/extension/county/ada/horticulture (accessed 2026-10-06)
8. University of Idaho Extension, “Subterranean Termites (CIS 1002).” objects.lib.uidaho.edu/uiext/uiext30870.pdf (accessed 2026-10-06)
9. USDA ARS and PRISM, via phzmapi.org, “Plant hardiness zone for ZIP 83702 (2023 USDA map data).” phzmapi.org/83702.json (accessed 2026-10-06)
10. National Pesticide Information Center, “State Pesticide Regulatory Agencies.” npic.orst.edu/reg/state_agencies.html (accessed 2026-10-06)