The short version
Most spiders in Los Angeles are harmless. Black widows live here, as in every lower-48 state. Los Angeles 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 Los Angeles who'd like fewer spiders, and peace of mind about the dangerous ones.
What to look for
Spiders follow their food. More insects means more spiders. Most are harmless and even helpful. Webs and egg sacs keep the cycle going.
- 1Webs behind shutters, meter boxes and utility panels.
- 2Spider activity in the garage near the door gap.
- 3Fresh cobwebs in corners days after cleaning them.
- 4Webs across doorways or gates each morning.
- 5Egg sacs, round or teardrop-shaped, tucked in eaves and frames.
- 6Spiders wandering across walls at night.
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
Some companies in Los Angeles include the inspection in the first service fee, so ask how it's charged. Either way, treating without identifying is guesswork.
- Time
- 45–90 minutes
- Best for
- Every job; the species decides how much to do
Web and Egg-Sac Removal
$100–$250
Physical removal comes before any product. A technician in Los Angeles brushes down webs and egg sacs from eaves, soffits, window frames and porch ceilings with a pole brush or vacuum.
- Time
- 30–90 minutes
- Best for
- Visible webbing on eaves, porches, sheds and basements
Sealing Gaps, Lighting and Prey Reduction
$150–$450
Firewood, lumber and dense shrubs by the foundation shelter spiders. Moving them out removes shelter and its insect food supply.
- Time
- 1–4 hours
- Best for
- Long-term reduction; homes near woods, water or fields
Exterior Perimeter Treatment and Void Dusting
$150–$350
Interior spraying is rarely the answer. Inside, most techs treat cracks, closets and basements. Fogging rooms does little.
- Time
- 45–120 minutes
- Best for
- Heavy exterior activity, widows or recluses confirmed
Prices are typical published ranges. Ask what’s included before you compare quotes.
Where brown recluses live, they like quiet spots under beds and furniture, so a flashlight check along the frame is worth a minute.Which spiders live around Los Angeles.
All are harmless to people. Around Los Angeles, they're western black widows, usually hiding under decks, grills and meter covers. Brown widows are also common around Los Angeles. Their bite is milder than a black widow's. Brown recluses don't live around Los Angeles. Most suspects turn out to be harmless look-alikes. Most spiders in Los Angeles homes are house spiders, cellar spiders, jumping spiders and wolf spiders.
Local spiders conditions in Los Angeles.
Across Los Angeles, the area is mostly urban, 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 Los Angeles usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Los Angeles'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 Los Angeles and California 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. Los Angeles sits in a mediterranean climate, and that sets the pace for spider activity here: late summer through fall (August-October).
A vent that closes properly keeps spiders from using it as a winter doorway.When you’ll see more of them.
Many stay active all year. Winters are mild in Los Angeles, with lows near 48°F, so spiders stay active most of the year. Spring brings a new hatch. Clear egg sacs in winter. Spiders peak in late summer and fall here.
Where they hide in houses here.
Check garage corners, door gaps and storage shelves. Look behind furniture and in closets. Many homes in Los Angeles sit on slabs, so the garage is the busiest spider spot.
A year of spiders in Los Angeles.
- Winter: with lows near 48°F in Los Angeles, a good time to clear clutter and seal gaps. - Spring: new spiderlings hatch. Vacuum webs and egg sacs. - Summer: highs near 84°F in Los Angeles bring more insects, and more spiders. - Fall: males wander indoors. Peak spider season.
Harmless or worth a closer look?
- 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. - Wolf spider: big, hairy and fast. Harmless. - Cellar spider: tiny body, very long legs. Harmless. - Jumping spider: small, fuzzy, hops. Harmless.
If you think you’ve been bitten.
Use a cool compress. 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.
Fewer spiders, the easy way.
- Beds: keep them a few inches from the wall. - Lights: yellow bug lights draw fewer insects. - Gaps: add door sweeps and repair screens. - 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.
Webs outside: leave some, clear some.
- 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. - Eaves and window frames: a long-handled brush works well. - Woodpiles: keep them off the ground and away from the house.
Spider myths.
- 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 move in for winter: most house spiders never leave.
Spiders and pets.
A widow bite can sicken a dog or cat. your vet. Some sprays are risky for cats. Ask the company which products are cat-safe. Most spiders are no threat to pets.
What a spider visit looks like.
The tech walks the outside first. 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.
Sticky traps tell you a lot.
Check them after a week. They show which spiders you have and where they travel. Set sticky traps along baseboards, behind furniture and in the garage.
Outdoor lights and spiders.
Yellow bulbs attract fewer bugs. Motion-sensor lights help too. Porch lights draw insects, and insects draw spiders.
Cellar spiders in the basement.
They're harmless and even eat other spiders. A dehumidifier and a broom keep them in check. Long-legged cellar spiders hang in basement corners.
Spiders in the garage.
Store things in sealed bins off the floor. A door sweep and a sticky trap by the door help. Garages collect webs, boxes and insects.
Questions to ask before you sign.
- When can kids and pets go back in? - Which spiders did you find? - Where will you treat, inside and out? - Is web and egg-sac removal included? - Will you seal gaps or add door sweeps? - What happens if they come back?
What affects the price
- Bundling with an existing general pest plan.
- Amount of clutter in garage, basement and storage.
- Exterior siding type and number of gaps.
- Local labor rates and travel distance.
- Whether outbuildings, sheds and decks are included.
- Wooded, wet or open-field surroundings.
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What concerns you most about spiders in your home?
When to call for help
Call if a black widow is near where kids play. if spiders keep coming back after cleaning. High eaves and attics are worth leaving to a pro.
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 Los Angeles
Los Angeles only gets about 15 inches of rain a year, so spiders gather where insects find water: garages, sprinkler zones and shaded walls. In denser parts of Los Angeles, spiders favor stairwells, garages, basements and window frames. Los Angeles has a mediterranean climate, and spiders activity here tends to follow late summer through fall (August-October). An inspection in Los Angeles that starts outside and works inward usually finds the entry points, moisture, and shelter that matter most before anyone treats.
Local research
Spiders in Los Angeles, CA: what the public record shows
Before you compare quotes, it helps to know which spiders actually live in California, when they are busiest around Los Angeles, and what the state figures look like. Everything below links to the agency or university page it came from.
Spiders submitted by Californians identified as brown recluse
Identification before treatment saves money and worry.
UC Riverside Spider ResearchSpider species recorded in California
- 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…
- 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…
- Desert recluse (Loxosceles deserta) — California's 'south eastern deserts are home to several related native species such as the desert recluse spider'; the brown recluse itself has 'NEVER established breeding popul…
When spiders are busiest around Los Angeles
Black widows 'occur in most parts of California' and are the main spider that can cause serious injury (UC IPM); widow bites concentrate in summer months.
'In California, the main spider that can cause serious injury is the black widow' (UC IPM). 'While the brown recluse has occasionally been brought into California in household furnishings, firewood, and motor vehicles, there are no breeding populations in the state.'
Rules that apply in California
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: Brown Recluse Spiders? Not in California!; UC Riverside Spider Research; CDC/NIOSH; Pest Notes: Spiders (PN 7442). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep spiders away
- Check meter boxes and grills before reaching in.
- Clear leaf litter and debris from foundations.
- Keep garage doors closed and weatherstripped.
- Close windows at night or use tight screens.
- Inspect items brought in from sheds and garages.
- Stack firewood well away from the house.
Compare quotes on what they include: web removal, treatment, sealing and any follow-up visit.Did you know?
Some spiders can survive months without a meal
Jumping spiders see in color and plan their route before they pounce
Questions people ask
What attracts spiders to a house?
Food, mostly. Spiders follow insects to porch lights, damp spots and clutter. Cut the insects and spiders follow.
Do brown recluses live in my area?
Probably not. California is outside the brown recluse range.
Why do spiders keep coming back after I clean?
Usually because the insects they eat are still around. Egg sacs and gaps around doors also keep them coming.
Will treatment get rid of all the spiders?
No, and that's fine. The goal is fewer spiders indoors. A few outside help control other pests.
Why are there suddenly so many spiders in fall?
Males wander in late summer and fall looking for mates. Many end up indoors by accident. It usually settles down in a few weeks.
Is monthly spider control worth it?
Only for heavy or persistent activity. Across Los Angeles, in its January 2025 U.S. cost guide, Local quotes vary; ask for a written estimate. Those are totals for the year. Before work starts in Los Angeles, ask how many visits are included and what happens if the spiders come back.
How much does spider extermination cost?
Local quotes vary; ask for a written estimate. The next step is an inspection that finds the source.
Are there dangerous spiders in Los Angeles?
Black widows, yes, as almost everywhere. Most other spiders here are harmless.
When are spiders worst in Los Angeles?
Late summer and fall, though they're around most of the year.
Nearby cities
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Sources (11)
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