Seeing more spiders around the house in fall doesn't necessarily mean your home is suddenly infested. Some outdoor spiders wander inside as temperatures fall, while others already live indoors year-round. Female spiders of some species are also especially noticeable this time of year because they're carrying developed eggs and looking for protected places to deposit them, according to University of Georgia Extension.
If you're wondering where spiders hide in your home, start with three areas: undisturbed storage spaces, upper room edges, and gaps near doors, windows, and foundations. They aren't the only places spiders turn up, but they cover many of the quiet, sheltered spots where spiders are easy to miss.
Most household spiders pose little threat to people, and bites are uncommon. Rather than reaching for a pesticide at the first sighting, start by figuring out where spiders are appearing and what might be attracting or sheltering them.
For the inspection, grab a flashlight, work gloves, and a vacuum with a hose attachment. A jar or cup and a stiff card can help with catch-and-release, while caulk, weather-stripping, or a door sweep may come in handy afterward.
3 places spiders are easy to miss
1. Dark, low-traffic storage areas
Basements, crawl spaces, garages, and boxes or furniture that rarely get moved should be first on the list.
Colorado State University Extension notes that cellar spiders commonly occupy dark corners of cellars, crawl spaces, and garages, where they build loose, untidy webs. Stored belongings create additional sheltered areas that can go undisturbed for weeks or months.
Widow spiders can also use protected, low-traffic spaces such as garage corners, wood piles, and areas around stored objects, although their prevalence varies by region. Because some medically significant spiders favor secluded areas, avoid reaching blindly into places where you can't see what's inside.
Don't put a bare hand into boxes, wood piles, stacked pots, or crawl-space openings. Wear gloves, use a flashlight, and move stored items slowly enough to see what's behind them.
2. High and hidden indoor edges
Look up next. Ceiling corners, cracks near the tops of walls, and wall-ceiling junctions are easy to overlook during routine cleaning.
Sac spiders, for example, hunt at night and spend daylight hours inside silken retreats, which can appear high on walls near ceilings, according to University of Minnesota Extension. Other spiders may also turn up on walls or ceilings while hunting rather than remaining in a permanent web.
Scan high corners with a flashlight from the floor. If you need a closer look, use a stable stepladder rather than climbing onto a chair, table, or other furniture.
Don't assume every patch of silk is an abandoned web. A small silk retreat tucked into a crack or corner may still be occupied.
3. Gaps near doors, windows, and foundations
The third area to check isn't just a hiding place — it can also provide a route indoors.
Inspect door thresholds, gaps around window frames, damaged screens, foundation cracks, window wells, and other openings along exterior-facing walls. Pay particular attention to places where you've already noticed webs or repeated spider activity.
Walk the interior perimeter and look along baseboards, corners, and thresholds. Outdoors, check window wells and sheltered sections of the foundation without reaching into areas you can't see clearly.
Renters should avoid making permanent exterior repairs without checking the lease or contacting the landlord. Cleaning up stored belongings and identifying problem areas is one thing; repairing a foundation crack, exterior screen, or door may be the property owner's responsibility.
What webs and egg sacs can tell you
Web shape can offer clues about the type of spider using an area, but it isn't enough by itself to reliably identify a species.
A dense mat of silk leading to a funnel-shaped retreat is characteristic of funnel weavers. These webs can appear around structures, steps, foundations, low vegetation, and other protected spaces.
Loose, irregular webbing in a basement or crawl space is common among cellar spiders and other cobweb-building spiders. Female cellar spiders may also carry their eggs in a loose silk bundle rather than attaching a conventional egg sac to a web.
A flattened silk retreat in an upper corner or wall crack may be a sac spider's daytime shelter rather than an egg case.
If you find an unfamiliar spider in or near a web, don't use the web alone to decide what species you're dealing with.
How to remove spiders without spraying first
Finding a spider doesn't automatically call for pesticide. When only small numbers turn up indoors, physical removal is a practical place to start.
Use sticky traps to monitor activity. Place glue boards along walls, under furniture, or in other quiet areas to see where spiders are turning up most often. Keep traps out of reach of children and pets.
Vacuum accessible spiders, webs, and egg sacs. The National Pesticide Information Center recommends vacuuming spiders, webs, and egg cases indoors and reducing the insects they rely on for food. A hose attachment can make it easier to reach corners without direct contact.
Catch an ordinary spider with a cup or jar. Place the container over the spider, slide a stiff card underneath, turn the container upright, and move the spider outdoors. If you aren't confident about what the spider is or can't approach it safely, don't try to capture it by hand.
Once outside, spiders can be left alone. They prey on insects and other arthropods and are a normal part of the outdoor ecosystem.
How to keep spiders out of your home
Removing individual spiders won't accomplish much if the same hiding places and entry points remain.
Declutter quiet storage areas. Clear unnecessary paper bags, cardboard, and other piles that can remain undisturbed. Keep belongings organized so you can see and clean around them.
Seal obvious entry points. Caulk accessible gaps, replace worn door sweeps, add weather-stripping around doors and windows, and repair damaged screens.
Clear exterior shelter near the house. Move firewood, unused pots, debris, and other stored materials away from the foundation when practical. Trim shrubs and plants that press directly against the house.
Look at your outdoor lighting. Lights can draw insects toward doors and exterior walls, giving spiders a ready food supply. Yellow-toned lights generally attract fewer insects, so switching bulbs or reducing unnecessary lighting near entrances can make those areas less appealing to spider prey.
Fix the conditions before relying on pesticides. EPA integrated pest management guidance prioritizes monitoring, prevention, and lower-risk controls before broader pesticide treatments. Sealing openings, reducing shelter, and addressing the insects spiders feed on are more useful long-term steps than spraying alone.
If you do use a pesticide, follow the product label and make sure it is approved for the location and purpose you have in mind.
When not to handle a spider yourself
Most spiders encountered around a home aren't medically significant, but there's no reason to handle an unfamiliar spider just to identify it.
Widow spiders are one important exception. The CDC says black widow venom can cause pain that spreads beyond the bite area. Brown recluse spiders are another medically significant group, although in the United States they are primarily associated with the Midwest and South.
If you suspect you've found a widow, recluse, or simply a spider you can't safely identify, don't pick it up. Photograph it from a safe distance if possible and contact a local county extension office or pest professional for identification help.
Consider professional pest control if spider activity remains heavy after you've reduced clutter and sealed entry points, or if you repeatedly encounter spiders you cannot safely identify or remove.
If someone is bitten and symptoms worsen significantly, spread beyond the bite area, or the spider may be medically significant, get expert guidance. Poison Control offers individualized recommendations online and at 1-800-222-1222.
Start with the spots you rarely disturb
Start with the parts of the home that receive the least attention: stored boxes and furniture, high corners, and gaps around doors, windows, and the foundation. Vacuum accessible webs and egg sacs, clear unnecessary clutter, and seal obvious openings as you find them.
Then watch the areas where activity was highest. If spiders keep appearing after cleanup and sealing, that may point to an entry point, abundant insect prey, or a sheltered area you haven't addressed yet.
For most homes, the goal doesn't need to be eliminating every spider. Reducing the places they can hide and the routes they can use to get indoors is a more realistic way to keep surprise encounters to a minimum.
