How to Get Rid of House Spiders (2026 Guide)

Spiders walk in for three reasons: food, shelter and quiet. A home with flies in the kitchen, cardboard boxes in the basement and gaps under the doors is close to perfect habitat. The fix that lasts is not one spray but a short sequence: vacuum what is there, seal how they arrive, and remove what feeds them. Most house spiders are harmless and even useful, so part of the job is knowing which ones to relocate and which ones to treat as a real problem.

Why are spiders suddenly everywhere?

In late summer and early autumn, mature male house spiders leave their hiding spots and wander rooms in search of females. Numbers have not necessarily risen. The spiders were already living in wall voids, basements and garages all year. You simply notice them now because males cross open floors in the evening. Females stay put in webs and corners, following chemical cues in silk that draw males toward them.

That changes the strategy. A spider dashing across the living room is often a lone male, best caught and released. Webs in ceiling corners plus fresh egg sacs mean residents, and those need the full treatment below. If webs keep reappearing in the same spots within days, you have an established population with food and shelter, not a visitor problem.

Which spider is it, and does it matter?

Almost every spider you meet indoors in the United States is harmless. Cellar spiders hang in high corners. Wolf spiders roam floors without building webs. Common house spiders build messy cobwebs in window frames. Their fangs are too small or too weak to break skin, and they bite only when trapped against it.

Two exceptions deserve respect. Black widow is the shiny black cobweb spider whose adult females measure about half an inch and often show a red hourglass under the abdomen. Brown recluse is the tan-to-brown hunting spider with a violin mark on its front section and six eyes in three pairs instead of the usual eight. She builds loose, irregular cobwebs near ground level: under rocks and boards outside, and in garages, sheds, vestibules and woodpiles. The brown recluse is tan to dark brown with a violin-shaped mark on its front section and, unusually, six eyes in three pairs instead of eight. It hides by day in closets, shoes, stored boxes, behind baseboards and under beds, and roams at night.

Black widow venom attacks nerves. Pain, belly rigidity and chest tightness can follow a bite, and victims should get medical care fast. Brown recluse bites are painless at first, then redden and swell within hours and can ulcerate over weeks. If you suspect either species, catch the spider safely or photograph it and have an expert confirm the identification before deciding treatment. That single step prevents both panic and the wrong pesticide.

Trait	Black widow	Brown recluse	Common house spider
Body length	About 1/2 inch (female)	1/4 to 1/2 inch	About 1/4 inch
Key mark	Red hourglass under abdomen	Violin mark on front section	Mottled, no clear mark
Eyes	Eight	Six in three pairs	Eight
Web	Loose irregular cobweb near ground	Mat-like silk in hiding spots	Messy cobweb in corners
Typical spot	Garage, shed, woodpile, vestibule	Closet, shoe, storage box, under bed	Window frame, ceiling corner
Bite risk	Nerve venom, needs prompt care	Ulcerating sore, needs prompt care	Harmless

How do I clear the spiders that are already inside?

Start with a vacuum, not a spray. A crevice tool pulls spiders, webs and egg sacs out of ceiling corners, window frames, behind headboards, under appliances and along basement joists in one pass. Destroying egg sacs matters most. Each sac can release hundreds of young spiders, and swatting adults while leaving sacs behind restarts the whole cycle. Empty the vacuum cup into an outdoor trash can when you finish.

One missed egg sac can release hundreds of spiderlings, which is why vacuuming sacs matters more than swatting adults.

Next, map the hotspots. Press glue traps flat against baseboards and into room corners, especially in basements, garages and behind stored furniture. After three nights the pattern tells you where spiders travel. Heavy catches along one wall point to a nearby entry gap or a prey hotspot worth sealing first. Keep traps out of reach of pets and small children.

For lone spiders, the cup and card method still wins. Cover the spider with a clear cup, slide stiff cardboard beneath, and carry it out. Release house spiders into a shed or garage rather than open lawn, since an exposed release often kills an animal adapted to shelter. Wear heavy gloves whenever you move boxes, firewood or yard debris where widows or recluses might hide.

Read your traps like a three-night survey

Glue traps double as a counting tool. Number each trap with masking tape, sketch a rough floor plan, and record catches each morning for three nights. The pattern tells you which problem you have before you spend money.

Three-night result	Verdict	Next step
Zero catches everywhere	Visitor or resolved	Keep one trap per room as a monitor and recheck monthly
Catches on one wall only	Local hotspot	Seal gaps and declutter within six feet of that wall
Catches in several rooms	Established population	Full vacuum plus barrier treatment, then repeat the survey
Egg sacs on any trap	Breeding indoors	Vacuum sacs immediately and inspect wall voids and storage

Method	Best for	Effort	Limits
Vacuuming webs and sacs	Immediate knockdown	Low, weekly at first	Missed sacs restart the cycle
Cup and card	Single harmless spiders	Very low	No effect on populations
Glue traps	Finding hotspots, catching wanderers	Low, check every few days	Monitoring plus, not a full cure
Caulk, sweeps, screens	Long-term exclusion	One weekend	Must be thorough to hold
Barrier spray (bifenthrin, deltamethrin)	Entry routes outdoors	Monthly in warm season	Needs reapplication, label rules apply
Silica or pyrethroid dust in voids	Crevices, attics, crawl spaces	Low after application	Light deposit only, keep dry
Peppermint oil, conkers, plug-ins	Nothing proven	Wasted weekends	No convincing evidence

How do I stop more spiders from coming in?

Walk the outside of the house with fresh eyes. Trim branches, shrubs and vines so nothing touches siding or eaves. Vegetation bridges spiders straight to windows and upper walls. Move firewood, lumber and stacked pots away from the foundation. Clear leaf litter and debris along the base of walls, where both spiders and their prey shelter.

Then close the gaps. Caulk cracks around windows, utility pipes, foundation vents and the bottom edge of siding. Fit sweeps on exterior doors and garage doors until no daylight shows beneath. Repair torn screens and make sure attic and crawl space vents are screened. Spiders slip through surprisingly small openings, and every gap you close also blocks the flies, ants and cockroaches they hunt.

Light discipline helps more than most people expect. White porch bulbs pull in night-flying insects, and spiders set up webs exactly where the hunting is good. Swap entrance lights to yellow or sodium vapor bulbs, which draw far fewer insects, or put lights on motion sensors. Clean outdoor webs off eaves, porch ceilings and window frames every few weeks so new arrivals cannot settle.

Inside, make the house boring for spiders. Swap cardboard storage boxes for sealed plastic bins and pull them a few inches off the wall. Declutter closets, understairs and garage shelves a few times a year. Fix dripping taps and run a dehumidifier in damp basements, since moisture draws both spiders and prey. And keep up with the ants and other small insects in kitchens and pantries: as one entomologist puts it, the spider you see is often a sign of a second infestation doing the real attracting.

What about sprays, dusts and natural repellents?

Contact sprays disappoint against spiders for a mechanical reason: long legs hold the body above treated surfaces, and spiders do not groom pesticide off themselves the way cockroaches do. Perimeter barrier sprays around thresholds, garage and crawl space entrances and foundation vents still help by killing the insects spiders eat and deterring entry. Products with bifenthrin, cyfluthrin, deltamethrin or lambda-cyhalothrin work, but expect to reapply monthly or every other month in warm weather. Always follow the label: check state rules first, keep people and pets off treated areas until dry, and never spray near food surfaces.

Dusts earn their place in voids you cannot vacuum. Silica gel (such as CimeXa), cyfluthrin or deltamethrin dusts puffed as a barely visible film into wall crevices, behind baseboards and along attic joists kill spiders that cross them for months while dry. Apply with a bellows duster and resist the urge to lay it thick. Heavy piles repel spiders the way a snowdrift repels walkers, and they simply go around.

Skip total-release foggers. University of Kentucky entomologists note bug bombs seldom control spiders outside sealed voids such as attics, while coating the whole house in residue. The same skepticism applies to peppermint oil, citrus, conkers and ultrasonic plug-ins. As conservation ecologist Adam Hart told Good Housekeeping, there is no convincing evidence these keep spiders away, and money spent on gadgets buys less protection than a ten-dollar tube of caulk and an hour with screens and sweeps.

When should spiders mean calling a pro?

DIY handles common house spiders. Call a licensed company when the situation crosses any of these lines: confirmed black widows or brown recluses, egg sacs reappearing after thorough vacuuming, daily sightings two weeks into cleaning and sealing, or heavy webbing across whole rooms and outbuildings. Recluse and widow jobs often need the inspection skills, void treatments and protective equipment most homeowners lack, and companies also treat the prey insects at the root of the problem.

Framed that way, spiders become useful informants. A house with constant webs usually has a fly, ant or moisture problem worth solving on its own terms, the same exclusion habits that stop mice each fall, and storage discipline that also deters cockroaches. Even the bed bug inspection routine trains the same flashlight habit that finds spider harborages. Start with the vacuum and the caulk gun, learn the two dangerous species in the pest hub, and browse the full pest index when something new shows up. If the webs win anyway, that is what the pro finder is for.

How to: How to Get Rid of House Spiders (2026 Guide)

Clear current spiders, then close the routes and food that bring replacements.

You'll need

• vacuum with crevice tool
• caulk and weatherstripping
• door sweeps
• glue traps
• sealed storage bins

Tools

• flashlight
• ladder

1. Vacuum spiders, webs and egg sacs

   Work ceiling corners, behind furniture, under beds and along baseboards. Empty the vacuum outside. One egg sac can hold hundreds of spiderlings, so never leave sacs behind.

2. Set glue traps to find hotspots

   Place sticky traps flush along walls and in room corners. Check after three nights: traps with catches mark the routes and rooms to focus on.

3. Seal the entry routes

   Caulk cracks around windows, pipes and siding. Fit door sweeps, repair screens and close gaps under garage doors.

4. Cut clutter and prey

   Move boxes into sealed bins, pull storage off walls, fix leaks and keep food sealed so flies, ants and roaches decline. Hungry spiders leave on their own.

Frequently asked questions

What is the fastest way to get rid of house spiders?

Vacuum every visible spider, web and egg sac in one pass, then tidy the two most cluttered spots in the room. That gives same-day results. Sealing gaps and cutting insect prey keeps them from coming back.

Does peppermint oil keep spiders away?

There is no convincing evidence that peppermint oil, citrus sprays, conkers or ultrasonic plug-ins give reliable protection. Entomologists recommend physical exclusion first: screens, caulk and door sweeps.

Should I kill a spider or catch it?

A single harmless house spider can be caught under a cup with a card slid beneath and released in a shed or garage. Killing is only clearly better for black widows and brown recluses, and even then gloves and caution apply.

Do bug bombs work on spiders?

Rarely. Total-release foggers seldom control spiders except in sealed, inaccessible voids like attics, and they leave pesticide residue across your home. Vacuuming plus targeted dust or spray works better.

When should I call pest control for spiders?

Call a pro for confirmed black widows or brown recluses, egg sacs that keep appearing, daily sightings after two weeks of cleaning and sealing, or webs across whole rooms. Pros find harborages and treat entry routes you cannot reach.

Useful links (3)

1. University of Kentucky ENTFACT-623: Eliminating Spiders Around Homes and Buildings— entomology.ca.uky.edu
2. Good Housekeeping UK: The Right Way to Get Rid of Spiders (Prof. Adam Hart)— goodhousekeeping.com
3. USA Today: How to Get Rid of Spiders in Your Home (2026)— usatoday.com

Photo credits

Thank you to Shenrich91 and Tyler C. for sharing these beautiful photographs and helping bring this guide to life.

Wikimedia Commons · CC BY-SA 3.0 · CC0