Around Oregon
Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.
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Local ant information
Ant control in Oregon
Learn what to look for around your property, explore your city, and ask about an inspection or a quote.
Ants in Oregon: what to know
Where the trail leads
Look for the rooms and outdoor areas where you regularly notice ants. Food, water, and small openings are useful things to mention when asking for help.
A useful next step
Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to know the ant species before getting in touch.
Local research
Ants in Oregon: what the public record shows
Before you compare quotes, it helps to know which ants actually live in Oregon, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.
Ant species recorded in Oregon
- Carpenter ants (Camponotus spp.) — Large black or bicolored ants (1/4 to 1/2 inch) that excavate moist or decayed wood for nests rather than eating it; indoor nests are usually satellites of an outdoor parent col…
- Odorous house ant (Tapinoma sessile) — Small (1/16–1/8 inch) brown-black ant that smells like rotten coconut when crushed; found throughout North America with the widest range and greatest ecological tolerance of any…
- Pavement ant (Tetramorium immigrans (T. caespitum)) — Small dark-brown ant (about 1/8 inch) with grooved head that nests under sidewalks, driveways and stones and piles soil at nest entrances; the most common pest ant in and around…
- Western carpenter ants (Camponotus modoc and C. vicinus) — The two most destructive carpenter ants in the western U.S.; C. vicinus nests may hold up to 40 queens. Nests begin in water-damaged or decayed wood and can expand into sound wo…
When ants are busiest in Oregon
Ant populations begin to grow in late winter and early spring; ants enter buildings for food and moisture or to escape extreme weather or flooding (Oregon State).
Oregon State's Solve Pest Problems names odorous house ants and pavement ants as the most common household ants in the Pacific Northwest and recommends baits over sprays.
For context, nationally
- more than 367 million acres — Acres infested by imported fire ants. USDA APHIS
- Alabama, Arkansas, California, Florida, Georgia, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, and Puerto Rico — States and territories with imported fire ant infestations (APHIS). USDA APHIS
Sources: USDA APHIS; Carpenter Ants; Odorous House Ant (Tapinoma sessile Say), EB1550E; Pavement Ants; Pest Notes: Carpenter Ants. Figures are quoted as the source prints them. How we check our sources
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