Local spider information

Spider control in Oregon

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

Spiders 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 spiders, 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

Spiders in Oregon: what the public record shows

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

Poisonous brown recluse spiders do not live in Oregon

Brown recluse in Oregon

OSU Extension states it flatly — an Oregon 'recluse' is a misidentification.

Oregon State University Extension Service

of the 700 to 800 species of spiders in Oregon, only the black widow has the potential to cause serious harm to humans

Oregon spiders that matter medically

One species out of roughly 750 is the whole medical picture in Oregon.

Oregon State University Extension Service

found in the drier areas of southern Oregon and east of the Cascades more commonly than in the Willamette Valley

Where Oregon black widows are

Widow risk in Portland and the valley is much lower than east of the mountains.

Oregon State University Extension Service

Spider species recorded in Oregon

Western black widow (Latrodectus hesperus) — 'The black widow spider, Latrodectus hesperus, is the most common harmful spider in California' and 'occur in most parts of California' (UC IPM); 'common in Colorado' (CSU); Lat…
Hobo spider (Eratigena agrestis) — European funnel weaver 'detected in the Pacific Northwest in 1936', now 'throughout northern Utah' and 'throughout Washington'. Current extension/health stance: not medically si…

When spiders are busiest in Oregon

Fall is when Oregon spiders show up indoors, looking for warmth and for mates, alongside boxelder bugs and other overwintering insects (OSU Extension).

OSU Extension: 'Poisonous brown recluse spiders do not live in Oregon,' and of 700-800 Oregon spider species only the black widow can cause serious harm. One brown widow has been found, 'probably a hitchhiker from another area.' Spiders are 'beneficial in the garden and can just be ushered back outside.'

Rules that apply in Oregon

Oregon Department of Agriculture Pesticides Program

For context, nationally

Throughout North America, but are most common in the southern and western United States — Black widow distribution. CDC/NIOSH
In the midwestern and southern United States — Brown recluse distribution. CDC/NIOSH

Sources: Oregon State University Extension Service; CDC/NIOSH; Pest Notes: Spiders (PN 7442); Hobo Spider. Figures are quoted as the source prints them. How we check our sources

Explore Oregon cities

Albany

Mediterranean · suburban setting

Spider control in Oregon

Spiders in Oregon: what to know

Around Oregon

What to note

A useful next step

Spiders in Oregon: what the public record shows

Spider species recorded in Oregon

When spiders are busiest in Oregon

Rules that apply 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 spider control in Oregon