Local fly information

Fly control in Oregon

Learn what to look for around your property, explore your city, and ask about an inspection or a quote.

Flies in Oregon: what to know

Around Oregon

Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.

What to note

Where you see flies, how long it has been going on, and anything you’ve already tried are the most useful details to mention.

A useful next step

Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to identify the problem yourself before getting in touch.

Local research

Flies in Oregon: what the public record shows

Before you compare quotes, it helps to know which flies 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.

As short as a week in tropical locations, but a month or longer in the Pacific Northwest depending on temperature

House fly development time in the Pacific Northwest

Oregon's cool season stretches the house fly cycle, so populations build more slowly but sanitation lapses still catch up by August.

Pacific Northwest Extension (Oregon State University, Washington State University, University of Idaho)

Capable of traveling several miles but usually stays within a mile of its development site

House fly flight range from the breeding site

A neighbor's compost, dumpster, or manure pile within a mile is a plausible source.

Pacific Northwest Extension (Oregon State University, Washington State University, University of Idaho)

Adults about 13 mm long enter buildings during late summer and fall, crawling up walls and squeezing through gaps in windows, siding, and eaves into attics

Cluster fly entry in the Pacific Northwest

Oregon's fall cluster fly influx is a sealing problem, not a sanitation problem.

Pacific Northwest Extension (Oregon State University, Washington State University, University of Idaho)

Fly species recorded in Oregon

House fly (Musca domestica) — Non-biting; breeds in manure, garbage, lawn clippings, decaying produce. 45 days at 60°F to 7 days at 95°F. Carries bacteria and viruses causing diarrhea, cholera, food poisonin…
Little house fly (Fannia canicularis) — Most numerous in cooler spring and fall; males swarm 5–6 ft above ground in protected areas; develops in animal waste and fermenting grass clippings.
Flesh fly (Sarcophagidae) — Large gray flies with black stripes; carcasses in attics, chimneys, walls.

When flies are busiest in Oregon

House flies are most prevalent in the warm summer months and take a month or longer per generation in the Pacific Northwest; cluster flies move indoors in late summer and fall.

PNW 770 advises keeping dumpsters 50 feet or more from building entrances, emptying them at intervals under a week, and using plug-in UV light traps with sticky boards to locate where small flies are emerging.

For context, nationally

About 45 days at 60°F; 7 days at 95°F — House fly life cycle vs temperature. Texas A&M AgriLife Extension
75–150 per cluster; 350 to 900 in a lifetime — House fly eggs per female. University of New Hampshire Extension

Sources: Pacific Northwest Extension (Oregon State University, Washington State University, University of Idaho); Indoor Flies and Their Control; University of New Hampshire Extension; Flies (Home and Landscape). Figures are quoted as the source prints them. How we check our sources

Explore Oregon cities

Albany

Mediterranean · suburban setting

Fly control in Oregon

Flies in Oregon: what to know

Around Oregon

What to note

A useful next step

Flies in Oregon: what the public record shows

Fly species recorded in Oregon

When flies are busiest in Oregon

For context, nationally

Explore Oregon cities

Albany

Ashland

Beaverton

Bend

Corvallis

Eugene

Grants Pass

Gresham

Hillsboro

Keizer

Lake Oswego

Medford

Portland

Salem

Springfield

Tigard

Oregon City

Ask about fly control in Oregon