How To Get Rid Of Spiders Without Poison

• Give A Shit About Nature
• April 12, 2026
• Sustainable Living
• 0 Comments

Finding a spider in your home is one of those experiences that lands very differently depending on the person. For some, it’s a minor inconvenience they’d rather not deal with. For others, it’s a full-scale emergency. Either reaction is valid — and either way, you don’t need to reach for a can of chemical spray to handle it.

Conventional spider sprays typically use pyrethroids or organophosphates — synthetic compounds that work well but come with real tradeoffs: residue on surfaces, potential exposure to children and pets, and broader environmental impact when they wash outdoors. The good news is that for the average household spider situation, non-toxic methods work genuinely well. Here’s what the evidence actually supports, what’s worth skipping, and what to do if you’re dealing with something more serious.

Why spiders are inside in the first place

Before reaching for any repellent, it’s worth understanding what’s drawing spiders into your home — because prevention is more effective than any spray.

Spiders follow their food. House spiders don’t come inside looking for you; they come inside looking for the insects that are already there. If you have a lot of spiders, you probably also have a lot of smaller insects they’re eating. Addressing the conditions that attract insects addresses the spider population at the source.

Common spider entry points and attractants:

• Gaps around windows, doors, and utility pipe penetrations
• Torn or ill-fitting window screens
• Outdoor lighting that attracts insects (which then attract spiders) near entry points
• Clutter in basements, garages, and closets — undisturbed piles are ideal spider habitat
• Firewood or yard debris stored against the house exterior

Sealing entry points with weatherstripping and caulk is the single highest-impact spider prevention step available — more effective than any repellent, and permanent. A quick inspection of your doors, windows, and foundation for obvious gaps is time well spent before anything else.

The catch-and-release method (for the one spider in front of you)

If there’s a single spider you want gone immediately, the most direct approach is capture and release. Place a glass or jar over the spider, slide a piece of paper or cardboard underneath, carry it outside, and release it away from the house. A spider caught this way poses no risk to you, takes about thirty seconds, and leaves no residue anywhere.

For larger spiders or anyone uncomfortable getting that close, a handheld vacuum on low suction works well. Empty it outside promptly.

Peppermint oil: genuinely supported by science

Peppermint oil is the most popular natural spider repellent — and unlike most home remedies, there’s actual peer-reviewed research behind it. A study published in the Journal of Economic Entomology found that peppermint oil showed significant repellent effects on two out of three spider species tested, with brown widow spiders avoiding treated areas in more than 75% of choice trials. A more recent study in ScienceDirect identified catnip, cedarwood, cinnamon, and clove oils as effective repellents against wolf spiders as well.

The mechanism makes biological sense: spiders taste and smell through sensory receptors on their legs, making them highly sensitive to strong chemical compounds on surfaces they walk across. Peppermint’s active compounds — primarily menthol and menthone — appear to be genuinely aversive.

Important caveat: Peppermint oil and mint are toxic to dogs and cats, even through inhalation. If you have pets, avoid using peppermint oil in areas they access, or skip it entirely in favor of other options. The ASPCA’s Animal Poison Control Center confirms mint toxicity for both dogs and cats.

How to use it: Add 15 to 20 drops of 100% pure peppermint essential oil to a 16-ounce spray bottle filled with water and a few drops of dish soap (which helps the oil disperse rather than floating on the surface). Shake well before each use. Spray around window frames, door frames, baseboards, and any corners or gaps where spiders enter or congregate. Reapply every one to two weeks — the volatile compounds evaporate and lose effectiveness over time.

Cotton balls soaked in peppermint oil placed in corners, under furniture, or in closets are a lower-mess alternative. Replace them weekly.

Note: lemon oil, despite being widely recommended online, showed no significant repellent effect in the Journal of Economic Entomology study. Citrus juice and lemon peels have limited research support for spider repellency specifically — they may have some effect, but the evidence is much weaker than for peppermint.

Diatomaceous earth: the most reliable non-toxic killer

If repelling spiders isn’t enough and you want something that eliminates them, diatomaceous earth is the most effective non-toxic option available. Unlike essential oils, which deter spiders, diatomaceous earth kills them — worth knowing if that matters to you.

Diatomaceous earth is a fine powder made from the fossilized remains of microscopic aquatic organisms called diatoms. Under a microscope, it’s razor-sharp. When a spider (or any insect with an exoskeleton) walks through it, the particles scratch through the waxy coating of the exoskeleton and cause the spider to lose moisture and desiccate. According to the National Pesticide Information Center, this mechanism is purely physical — spiders cannot develop resistance to it the way they can to chemical pesticides.

Always use food-grade diatomaceous earth for indoor applications. Industrial-grade DE is processed differently and has a different silica structure that is more hazardous to inhale. Food-grade DE is widely available at hardware stores and online — Safer Brand Diatomaceous Earth is a well-regarded option.

Application: Apply a thin, even layer in areas where spiders travel — baseboards, window sills, corners, under furniture, around door frames, and along the exterior perimeter of the foundation. Thin is key: a thick pile of DE is less effective than a fine dusting because spiders can walk around visible obstacles.

Critical safety note: Wear a dust mask during application and avoid applying in areas where children or pets will disturb it. Food-grade DE is not toxic if ingested in small amounts, but the fine particles are an irritant if inhaled in quantity. Once settled, it’s generally safe — the respiratory concern is primarily during application when the powder is airborne.

DE loses effectiveness when wet. Reapply after cleaning or if moisture reaches treated areas.C

Cedarwood: a gentler passive repellent

Cedar has a long history as an insect and spider repellent, and the research supports it: cedarwood oil was among the five essential oils that significantly deterred wolf spider activity in the 2025 ScienceDirect study.

Cedar applications are low-effort and low-maintenance. Cedar blocks, sachets, or chips placed in closets, drawers, storage areas, and along baseboards release repellent compounds passively. Cedar mulch around the exterior perimeter of the house adds an outdoor layer of deterrence. Cedar America and similar suppliers offer cedar chips and blocks specifically for pest deterrence.

Cedar repellency fades as the wood dries out. Sand cedar blocks lightly every few months to refresh the surface and reactivate the oils, or replace them annually.

Sticky traps: low-tech, high-information

Sticky traps (also called glue boards) placed along baseboards and in corners do two useful things: they catch spiders, and they tell you where spiders are traveling and how many you’re dealing with. This makes them valuable both as a control method and as a diagnostic tool.

They’re not a complete solution on their own — they won’t eliminate a spider population — but combined with essential oil repellents at entry points and diatomaceous earth in high-traffic areas, they fill in the gaps. Catchmaster and Terro Spider & Insect Traps are widely available options.

Reducing clutter and web management

Spiders are strongly motivated by shelter. Undisturbed piles of boxes, clothing, firewood, and stored items provide ideal habitat — dark, protected, and close to the insects they eat. Regular decluttering, especially in basements and garages, removes the conditions that make your home attractive.

When you see webs, remove them promptly. Repeatedly destroying webs eventually discourages spiders from treating a location as viable territory. A vacuum with a hose attachment handles webs in corners efficiently, and the spiders inside them.

When to call a professional

Most household spiders are harmless. The species that pose genuine medical risk in the United States — primarily black widows (Latrodectus species) and brown recluse spiders (Loxosceles reclusa) — require different handling than the general advice above.

If you’re finding multiple black widows or brown recluses in your home, that’s a situation where professional pest control is the appropriate response. DIY methods can reduce their numbers but typically can’t address an established population of medically significant spiders comprehensively.

How to identify them:

• Black widow: Glossy black body, distinctive red hourglass marking on the underside of the abdomen. Found in dark, undisturbed areas — garages, woodpiles, under furniture.
• Brown recluse: Light to dark brown, violin-shaped marking on the back near the head, six eyes rather than eight. Found in undisturbed areas, particularly in the South and Midwest.

If you’re uncertain whether the spiders in your home are a dangerous species, your local Cooperative Extension Service can often help with identification — many offer free insect/spider ID services by photo submission.

The complete non-toxic spider control plan

Working through these steps systematically handles most household spider situations without any chemical pesticides:

Prevention (do these first):

• Seal gaps around windows, doors, and utility penetrations with weatherstripping and caulk
• Repair torn window screens
• Switch outdoor lighting near entry points to yellow or sodium vapor bulbs, which attract fewer insects
• Store firewood and yard debris away from the house exterior
• Reduce clutter in basements, garages, and storage areas

Repellents (ongoing maintenance):

• Peppermint oil spray at entry points and in corners — reapply every 1 to 2 weeks (avoid in homes with cats or dogs)
• Cedar blocks or sachets in storage areas and closets
• Cedarwood oil spray as an alternative to peppermint for pet-safe households

Active control:

• Diatomaceous earth (food-grade) along baseboards and entry points
• Sticky traps along baseboards and in corners
• Regular web removal throughout the house

Frequently asked questions

Do essential oils actually repel spiders or is it a myth? Peppermint oil has genuine peer-reviewed research supporting its repellent effect on at least two spider species. Cedarwood, catnip, cinnamon, and clove oils also showed repellent effects in a 2025 study. Lemon oil specifically did not show significant repellent effects in the best available study. The science is more solid than most people realize — though effectiveness varies by concentration, freshness, and spider species.

Is diatomaceous earth safe around kids and pets? Food-grade diatomaceous earth is not toxic in the way chemical pesticides are, but it is an inhalation irritant during application. Once settled, the risk is low. Keep children and pets out of the area during application and until the dust has settled. Avoid use in areas where pets might sniff or dig at it repeatedly.

Why do I suddenly have more spiders than usual? Spider activity increases in late summer and fall in most of North America as males become more mobile searching for mates, and as cooler temperatures drive them indoors. An unusual spike often also indicates an increase in the insect population they’re feeding on. Addressing lighting that attracts insects near your home and sealing entry points will help most seasonal influxes.

Can I keep some spiders and get rid of others? Absolutely. Most household spiders — cellar spiders, common house spiders, jumping spiders — are harmless and genuinely useful, eating mosquitoes, flies, and other insects you’d rather not have around. If the goal is specifically to remove dangerous species or reduce a large population rather than eliminate every spider in the house, targeted application of diatomaceous earth in problem areas is more appropriate than whole-home repellent treatment.

What’s the fastest way to get rid of a spider right now? A glass and a piece of cardboard for capture-and-release, or a vacuum. Both are immediate, require no products, and take under a minute.