The short version
Most spiders in Olympia are harmless. Black widows live here, as in every lower-48 state. Olympia is outside the brown recluse range, so most 'recluses' here are look-alikes. Identify first, then treat.
- Most house spiders are harmless.
- Black widows live in every lower-48 state.
- Brown recluses don’t live here.
- Skip foggers; they don’t reach hiding spots.
- Yellow bug lights and door sweeps help a lot.
Homeowners and renters in Olympia who'd like fewer spiders, and peace of mind about the dangerous ones.
What to look for
Most are harmless and even helpful. Webs and egg sacs keep the cycle going. Spiders follow their food. More insects means more spiders.
- 1A pale spider in a silk pocket near the ceiling.
- 2Messy, funnel-shaped webs in shrubs and grass.
- 3Webs behind shutters, meter boxes and utility panels.
- 4Silk strands stretched across windows after wind.
- 5Spiders in a damp basement or crawl space.
- 6Small flying insects gathering under exterior lights.
Why it’s worth acting soon
- Egg sacs hatch hundreds of spiderlings.
- Webs build up in eaves, corners and garages.
- Widows nest under outdoor furniture and grills.
Treatment options and typical costs
Inspection and Species Identification
$75–$200
A pro in Olympia starts by walking the exterior, garage, basement and eaves with a flashlight, noting webs and where insects gather. The goal is to name the species before deciding anything.
- Time
- 45–90 minutes
- Best for
- Every job; the species decides how much to do
Monitoring and Follow-Up
$50–$150 per visit
Trap counts give an honest read. If numbers keep falling, the plan is working. If not, a good pro changes approach.
- Time
- 20–45 minutes
- Best for
- Confirming results; recluse or widow properties
Web and Egg-Sac Removal
$100–$250
A good pro in Olympia works high and low: gable vents, light fixtures, deck undersides and the gap behind shutters. Those spots stay webbed because nobody looks there.
- Time
- 30–90 minutes
- Best for
- Visible webbing on eaves, porches, sheds and basements
Sealing Gaps, Lighting and Prey Reduction
$150–$450
This is practical work: sweeps, screens, sealing and bulbs. A pro may do it or hand you a punch list.
- Time
- 1–4 hours
- Best for
- Long-term reduction; homes near woods, water or fields
Prices are typical published ranges. Ask what’s included before you compare quotes.
Spiders slip into attics through soffit and gable vents, then settle where nobody disturbs them.Which spiders live around Olympia.
All are harmless to people. Around Olympia, they're western black widows, usually hiding under decks, grills and meter covers. Brown recluses don't live around Olympia. Most suspects turn out to be harmless look-alikes. Hobo spiders are common in the Northwest. Despite their reputation, they aren't considered dangerous. Most spiders in Olympia homes are house spiders, cellar spiders, jumping spiders and wolf spiders.
Local spiders conditions in Olympia.
Olympia sits in a marine west coast climate, and that sets the pace for spider activity here: late summer through fall (August-October). For Olympia homes, the area is mostly suburban, so spiders pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by. An inspection in Olympia usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Olympia's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Olympia and Washington every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options.
Dense shrubs, mulch and stone walls close to the house give spiders cover right up to the siding.When you’ll see more of them.
You'll see the most in late summer and fall. That's when males wander. Winter lows around 34°F in Olympia slow spiders outside, but house spiders carry on indoors. Spring brings a new hatch. Clear egg sacs in winter.
Where they hide in houses here.
Inside, check closets and corners. Many houses around Olympia have crawl spaces, and cellar spiders and widows love them. Check crawl vents, the crawl door and the undersides of porches.
A year of spiders in Olympia.
- Fall: males wander indoors. Peak spider season. - Winter: with lows near 34°F in Olympia, a good time to clear clutter and seal gaps. - Spring: new spiderlings hatch. Vacuum webs and egg sacs. - Summer: highs near 78°F in Olympia bring more insects, and more spiders.
Harmless or worth a closer look?
- Wolf spider: big, hairy and fast. Harmless. - Cellar spider: tiny body, very long legs. Harmless. - Jumping spider: small, fuzzy, hops. Harmless. - Orb weaver: big round web outside. Harmless. - Black widow: shiny black, red hourglass underneath. Leave it alone. - Brown recluse: tan, violin mark on its back, plain legs.
If you think you’ve been bitten.
Raise the area if you can. See a doctor for severe pain, cramping or spreading redness. If you can, safely catch the spider for identification. Wash the bite with soap and water. Use a cool compress.
Fewer spiders, the easy way.
- Clutter: store things in sealed plastic bins, not cardboard. - Webs: vacuum webs and egg sacs every few weeks. - Shoes and gloves: shake them out before use. - Beds: keep them a few inches from the wall. - Lights: yellow bug lights draw fewer insects. - Gaps: add door sweeps and repair screens.
Webs outside: leave some, clear some.
- Eaves and window frames: a long-handled brush works well. - Woodpiles: keep them off the ground and away from the house. - Gloves: wear them when moving firewood, pots or patio cushions. - Garden orb weavers: leave them. They catch flies and mosquitoes. - Doorways and porch lights: brush webs away weekly.
Spider myths.
- Spiders move in for winter: most house spiders never leave. - Every blister is a recluse bite: most aren’t spider bites. - Swallowing spiders in your sleep: no evidence it happens. - Daddy longlegs are deadly: no. They’re harmless.
Spiders and pets.
your vet. Some sprays are risky for cats. Ask the company which products are cat-safe. Most spiders are no threat to pets. A widow bite can sicken a dog or cat.
What a spider visit looks like.
They knock down webs and egg sacs around eaves and windows. They treat cracks, gaps and hiding spots, not open lawn. Inside, they focus on corners, closets and the garage. Most visits take about an hour. The tech walks the outside first.
Sticky traps tell you a lot.
Set sticky traps along baseboards, behind furniture and in the garage. Check them after a week. They show which spiders you have and where they travel.
Outdoor lights and spiders.
Porch lights draw insects, and insects draw spiders. Yellow bulbs attract fewer bugs. Motion-sensor lights help too.
Cellar spiders in the basement.
Long-legged cellar spiders hang in basement corners. They're harmless and even eat other spiders. A dehumidifier and a broom keep them in check.
Spiders in the garage.
Garages collect webs, boxes and insects. Store things in sealed bins off the floor. A door sweep and a sticky trap by the door help.
Questions to ask before you sign.
- Is web and egg-sac removal included? - Will you seal gaps or add door sweeps? - What happens if they come back? - When can kids and pets go back in? - Which spiders did you find? - Where will you treat, inside and out?
What affects the price
- Lighting changes recommended or performed.
- Number of follow-up visits included.
- Season and how heavy current activity is.
- Inclusion of web and egg-sac removal.
- Eave depth and roofline height.
- Home size and number of stories.
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What's your biggest concern about spiders?
When to call for help
High eaves and attics are worth leaving to a pro. Call if a black widow is near where kids play. if spiders keep coming back after cleaning.
What you can do yourself
Start simple. Switch to yellow bug lights. Add door sweeps and store things in sealed bins. Skip foggers. They don't reach hiding spots. A pro adds targeted treatment in cracks and voids.
Spiders in Olympia
For Olympia homes, most of the housing is suburban, so the usual entry points, moisture spots, and sheltered areas near the structure are what an inspection checks first. For Olympia homes, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. A local provider who knows Olympia and Washington can point out the specific conditions that matter most here before you commit to a plan. With about 51 inches of rain a year and humidity near 77%, Olympia supports plenty of insects, and spiders follow them. In Olympia's neighborhoods, eaves, porch lights, woodpiles and garages are spider favorites. Olympia has a marine west coast climate, and spiders activity here tends to pick up late summer through fall (August-October).
Local research
Spiders in Olympia, WA: what the public record shows
Before you compare quotes, it helps to know which spiders actually live in Washington, when they are busiest around Olympia, and what the state figures look like. Everything below links to the agency or university page it came from.
Spider species recorded in Washington
- 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…
- Yellow sac spider (Cheiracanthium spp.) — 'Can be seen running on walls and ceilings at night'; bites happen when 'trapped against a person's skin in clothing or bedding' (UC IPM). One of two spiders of medical signific…
When spiders are busiest around Olympia
'When temperatures start to cool, spiders may migrate into garages and homes in search of warmth and shelter' (WA DOH).
'There are two spiders in Washington of medical significance: the black widow spider' and the yellow sac spider; 'Hobo spiders (Eratigena agrestis) are not considered dangerous as previously thought' and 'can be found throughout Washington' (WA DOH). Black widows 'common to eastern Washington'; yellow sac spiders 'in eastern Washington and in the Seattle area'.
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: CDC/NIOSH; Pest Notes: Spiders (PN 7442); Hobo Spider. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep spiders away
- Clear leaf litter and debris from foundations.
- Vacuum webs and egg sacs weekly during warm months.
- Stack firewood well away from the house.
- Shake out shoes and clothing left on floors.
- Run a dehumidifier in damp basements.
- Cover weep holes with fine mesh, not caulk.
Spiders found in a bathtub or vanity usually wandered in from a gap behind the plumbing, not up the drain.Did you know?
Jumping spiders see in color and plan their route before they pounce
Some spiders can survive months without a meal
Questions people ask
Should I use a fogger or bug bomb for spiders?
Foggers don't reach where spiders hide. They can also be a fire risk if used wrong. No.
How do I know if I have a black widow?
They hide under furniture, grills and meter covers. Don't handle it. Look for a shiny black spider with a red hourglass underneath.
Will treatment get rid of all the spiders?
The goal is fewer spiders indoors. A few outside help control other pests. No, and that's fine.
Do spider sprays actually work?
They rarely reach hiding spots. Removing webs and egg sacs and sealing gaps works better. Store-bought sprays kill what they touch.
What attracts spiders to a house?
Spiders follow insects to porch lights, damp spots and clutter. Cut the insects and spiders follow. Food, mostly.
Is monthly spider control worth it?
For Olympia homes, monthly visits roughly double the annual cost of quarterly ones, based on Local quotes vary; ask for a written estimate. Local quotes vary. Only for heavy or persistent activity.
How much does spider extermination cost?
For Olympia homes, between $100 and $300 is Local quotes vary; ask for a written estimate.
Are there dangerous spiders in Olympia?
Black widows, yes, as almost everywhere. Most other spiders here are harmless.
When are spiders worst in Olympia?
Late summer and fall, when males wander.
Nearby cities
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Sources (10)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Spider Exterminator · Updated September 11, 2026 · How we write these guides