Pests to know in Salem
Termites in Salem
OSU's pest guide names the Pacific dampwood termite and the western subterranean termite as the species that damage structures in the Pacific Northwest.[6]
Pests local experts flag
To keep out both rats and mice, Marion County advises sealing any opening larger than 1/4 inch, using metal or concrete where utilities enter buildings.[3]
Climate
Central Salem (ZIP 97301) is in USDA plant hardiness zone 8b, where the average coldest winter night is 15 to 20°F.[10]
Public agencies that handle pests
- Marion County Environmental Health describes the county's vector problem as largely human-driven, tied to agriculture, a growing population, and urbanization.[1]
- Marion County Environmental Health investigates reported animal bites in the county, and it notes that bats are the main rabies carriers in Oregon.[2]
- Marion County says bed bugs are not known to spread disease, and it recommends homeowners hire a licensed pest control professional to evaluate and treat.[4]
- The Oregon Health Authority works with local health departments and mosquito control districts to detect and test for West Nile virus in animals and people.[9]
Hiring a licensed company
- In Oregon, anyone holding a commercial pesticide applicator license must work for a business licensed as a commercial pesticide operator with the matching license categories.[8]
- For an Oregon pest control business set up as a corporation such as an LLC, ODA requires at least one employee to be licensed as a commercial pesticide applicator.[8]
Free local help
An OSU Extension answer notes that termite treatments for Oregon homes are often done only at the pre-construction phase.[7]
Through the year
- Winter to Summer
- Marion County notes a female mosquito may live up to three weeks in summer and many months over winter so she can lay eggs in spring.[5]
- Summer to Fall
- According to OSU, winged Pacific dampwood termites leave established nests in swarms during late summer or fall, and these flights are not cause for alarm.[6]
Sources
- Marion County Health & Human Services, “Vector Control.” www.co.marion.or.us/HLT/PH/EHS/vector/Pages/default.aspx (accessed 2026-10-06)
- Marion County Health & Human Services, “Rabies Investigations.” www.co.marion.or.us/HLT/PH/EHS/vector/Pages/rabies.aspx (accessed 2026-10-06)
- Marion County Health & Human Services, “Rodent Control.” www.co.marion.or.us/HLT/PH/EHS/vector/Pages/rodent.aspx (accessed 2026-10-06)
- Marion County Health & Human Services, “Bed Bug Information.” www.co.marion.or.us/HLT/PH/EHS/vector/Pages/Bed%20Bugs.aspx (accessed 2026-10-06)
- Marion County Health & Human Services, “Mosquito Control.” www.co.marion.or.us/HLT/PH/EHS/vector/Pages/mosq.aspx (accessed 2026-10-06)
- Oregon State University Extension Service, “Termites (Solve Pest Problems).” solvepestproblems.oregonstate.edu/insects-spiders/termites (accessed 2026-10-06)
- Oregon State University Extension Service, “How can I prevent termite infestation?.” extension.oregonstate.edu/ask-extension/featured/how-can-i-prevent-termite-infestation (accessed 2026-10-06)
- Oregon Department of Agriculture, “Pesticide License Requirements.” www.oregon.gov/oda/pesticides/licensing/Pages/license-requirements.aspx (accessed 2026-10-06)
- Oregon Health Authority, “West Nile Virus Activity.” www.oregon.gov/oha/PH/DISEASESCONDITIONS/DISEASESAZ/WESTNILEVIRUS/Pages/survey.aspx (accessed 2026-10-06)
- USDA ARS and PRISM, via phzmapi.org, “Plant hardiness zone for ZIP 97301 (2023 USDA map data).” phzmapi.org/97301.json (accessed 2026-10-06)
- National Pesticide Information Center, “State Pesticide Regulatory Agencies.” npic.orst.edu/reg/state_agencies.html (accessed 2026-10-06)