If you’ve spotted a spider in your bed, the safest approach is to trap it under a clear glass or jar, slide a stiff piece of paper underneath, and carry it outside. This takes about 30 seconds, keeps the spider contained the entire time, and puts zero distance between your hand and any fangs. The vast majority of spiders found in beds are harmless, but even so, you want a method that avoids direct contact.
The Glass and Card Method
This is the standard technique recommended by entomologists, and it works on any surface, including soft bedding. You need two things: a wide-mouthed clear glass or jar and a stiff card (an index card, a piece of cardboard, or even a credit card in a pinch). A clear container matters because you need to see where the spider is at all times.
Hold the glass by its base, not the rim, so your fingers stay as far from the opening as possible. Approach the spider slowly and place the mouth of the glass flat over it in one smooth motion. On a mattress or sheet, press the rim down firmly so the fabric forms a seal. Then take your card and slide it underneath the glass, keeping the rim as close to the surface as you can. Once the card is fully covering the opening, you have a sealed container. Carry it outside, point the mouth toward the ground, and pull the card away. The spider will crawl or drop out. Release it at least 10 to 15 feet from any doors or windows.
A few things that make this easier on bedding specifically: pull the sheet taut with one hand before placing the glass, so the spider can’t escape through a wrinkle. If the spider is nestled deep in a fold or between the fitted sheet and mattress, use a piece of paper to gently nudge it onto a flat, visible area first. Tupperware or a plastic food container with a wide opening works just as well as glass and is less likely to break if you fumble it.
What to Do if the Spider Runs
Spiders on fabric often bolt when they sense vibration. If you pull back the covers and the spider takes off, resist the urge to slap at it. A panicked grab is the most common way people get bitten by otherwise docile spiders. Instead, track its direction and wait. Most spiders stop moving within a few seconds once they find a new spot they perceive as sheltered, like the edge of the headboard or the crease where the mattress meets the frame. Once it’s still, use the glass method.
If you lose sight of it entirely, strip the bedding layer by layer, pulling each sheet away from the bed and shaking it out over the floor. Check the mattress seams, the piping along the edges, and any cracks in the bed frame or headboard. Spiders can squeeze into surprisingly tight gaps.
Identifying a Dangerous Spider
Two types of spiders in the United States carry medically significant venom: widow spiders and recluse spiders. Knowing a few features helps you decide how cautious to be.
Black widows are easy to spot. Adult females have a shiny, jet-black body with a red hourglass shape on the underside of the abdomen. They prefer dark, undisturbed spaces like garages and woodpiles, so finding one in a bed is uncommon but not impossible.
Brown recluses are trickier. Many people rely on the “violin” marking on the head region, but this feature varies a lot between species and can be faint or absent. The most reliable identifier is the eye arrangement: recluse spiders have six eyes arranged in three pairs, while most other spiders have eight eyes in two rows of four. Their bodies are no longer than about 3/8 of an inch, their legs and abdomen are uniformly colored (no stripes or bands), and the legs have no visible spines. Brown recluses are confirmed residents mainly in the south-central United States, from Texas to Georgia and north to Nebraska. Outside that range, the spider in your bed is almost certainly something else.
If the spider looks like either of these, use the glass method with extra care and release it well away from the house. If you’re bitten and suspect a venomous species, clean the area with soap and water, apply a cool compress for 15 minutes each hour to limit swelling, and contact an urgent care center or your doctor. Signs that need medical attention include spreading redness, severe pain, muscle cramps, or a wound that develops a dark center.
Inspecting Your Bed Thoroughly
After removing the spider, it’s worth checking for others or for egg sacs. Strip all bedding, including the mattress pad, and inspect the mattress surface on all sides. Focus on seams, piping, tags, and any stitched edges, as these mimic the crevices spiders use for shelter. Check the bed frame joints, headboard crevices, and the area where the box spring meets the frame. If a crack is wide enough to fit a credit card, it can hide a spider.
Spider egg sacs are small, round, silken bundles usually white or off-white. They’re often tucked into corners or attached to the underside of surfaces. If you find one, wrap it in a tissue and dispose of it outside, or use the glass method if you’d rather relocate it. A single egg sac can contain dozens to hundreds of spiderlings depending on the species, so removing it promptly matters.
Washing Your Bedding
Running your sheets, pillowcases, and blankets through the laundry after a spider encounter is mostly about peace of mind, but it’s effective. The dryer is what does the real work. High heat for 30 to 45 minutes kills spiders, eggs, and the tiny insects that attract spiders to your bed in the first place. Washing at 140°F (60°C) also helps, though many fabrics aren’t rated for that temperature. A normal warm wash followed by a full high-heat dryer cycle is a practical compromise that handles the problem without damaging your bedding.
Keeping Spiders Out of Your Bed
Spiders end up in beds because they’re hunting prey or looking for shelter, not because they’re attracted to you. A few changes to your sleep setup make the bed a much less appealing destination.
Pull the bed away from the wall by at least a few inches. Spiders commonly reach the mattress by walking from a wall onto the headboard or frame. Remove anything that creates a bridge from the floor to the bed: dust ruffles, trailing blankets, clothes draped over the footboard, or stacks of books against the frame. Interceptor cups, plastic dishes designed to sit under each bed leg, create a smooth-walled moat that crawling insects can’t climb out of. They’re marketed for bed bugs but work just as well against spiders.
Reduce what attracts spiders to the bedroom in the first place. Spiders go where their food is, and their food is other insects. Keep windows screened, seal gaps around baseboards and door frames, and avoid leaving lights on near open windows at night, since light draws the flying insects that spiders feed on. Vacuuming corners, under the bed, and along baseboards once a week removes webs, egg sacs, and the small insects that sustain a spider population.
Peppermint oil sprays are a widely shared home remedy, but the scientific support is thin. There’s limited research showing that certain plant compounds can repel insects, and one study found peppermint oil deterred Argentine ants for up to a week. But most commercial pest-control professionals dispute that essential oils work reliably against spiders, and no controlled study has demonstrated a meaningful repellent effect in real home conditions. Physical barriers like interceptor cups and sealed entry points are far more dependable.