Best Spider Repellent UK 2026: Sprays, Traps & Natural Options

Every autumn, UK homes experience a familiar invasion: large house spiders scuttling across floors, lurking in bath tubs, and building webs in every corner. While spiders are harmless and genuinely beneficial — eating flies, mosquitoes, and other household pests — many people find them deeply unsettling. Arachnophobia is one of the most common phobias in the UK, and even those who are not afraid of spiders may not want them sharing their living room. The good news is that a range of effective spider repellents, sprays, and deterrents can significantly reduce the number of spiders entering your home.

Spider repellents fall into several categories: chemical barrier sprays that kill or deter spiders on contact and leave a residual coating, natural peppermint-based sprays that spiders find unpleasant, humane catcher tools for removing spiders without killing them, and traditional remedies like conkers. The right choice depends on how serious your spider problem is, whether you want to kill or simply deter spiders, and whether you have children or pets in the household.

To compile this guide, we evaluated the leading spider repellent products on Amazon UK based on effectiveness, duration of protection, safety around children and pets, and genuine customer reviews. Every product listed is available on Amazon UK.

Best Spider Repellents at a Glance

1. Karlsten Spider Repellent Spray — Best Overall

The Karlsten Spider Repellent Spray is our top pick for a reliable, everyday spider deterrent. Its peppermint-based formula makes it safe to use throughout the home — including bedrooms, bathrooms, and kitchens — without worrying about toxic chemicals around children or pets. The spray works by creating a scent barrier that spiders find unpleasant, encouraging them to avoid treated areas entirely rather than killing them.

Application is straightforward: spray along windowsills, door frames, skirting boards, and any gaps where spiders might enter. The peppermint scent is genuinely pleasant for humans — many users report that it doubles as a room freshener. Each application lasts approximately 2-4 weeks before needing to be reapplied, making it a practical option for ongoing prevention throughout the autumn spider season.

For best results, combine the Karlsten spray with physical exclusion measures such as draught excluders on external doors and mesh covers on air bricks. The spray deters spiders from treated surfaces, while sealing entry points prevents them from getting inside in the first place.

Pros:

• Natural, non-toxic peppermint formula
• Safe around children and pets
• Pleasant scent that freshens the room
• Easy spray application along entry points

Cons:

• Needs reapplication every 2-4 weeks
• Does not kill spiders — deterrent only
• Limited scientific evidence for peppermint effectiveness

2. Miss Muffet's Revenge Spider Killer Spray — Best Long-Lasting

For serious spider problems that require a long-term solution, Miss Muffet's Revenge stands out with its remarkable 12-month barrier protection. Unlike natural deterrents that need frequent reapplication, a single treatment with Miss Muffet's Revenge creates a chemical barrier that continues to kill spiders on contact for up to a year. The included spray wand extends your reach to treat high corners, eaves, and other hard-to-access areas where spiders commonly build webs.

The professional-grade formula is designed for use around the exterior of your home — along window frames, door frames, garage entrances, and under eaves. It is particularly effective when applied in late August or early September, just before the autumn spider season begins. One thorough application around the perimeter of your home can dramatically reduce the number of spiders making their way inside during mating season.

Because this is a chemical spider killer rather than a gentle deterrent, it is best suited for outdoor and perimeter use. If you have concerns about chemical exposure around children or pets, use it on exterior surfaces only and pair it with a natural peppermint spray for interior areas.

Pros:

• Up to 12 months of barrier protection from a single application
• Spray wand reaches high corners and eaves
• Kills on contact — not just a deterrent
• Ideal for exterior perimeter treatment

Cons:

• Chemical formula — less suitable for indoor use around children and pets
• Higher price point than natural alternatives
• Best suited for exterior application

3. Pest Expert Formula C Spider Spray — Best Professional-Grade

Pest Expert Formula C is the professional's choice for spider control. The HSE-approved active ingredient provides genuine knockdown power and residual barrier protection — the same calibre of product used by commercial pest control technicians. It kills spiders on contact and leaves a residual coating on treated surfaces that continues to work for weeks afterwards, killing any spider that crosses the treated barrier.

What makes Formula C particularly versatile is that it is effective against all UK spider species, including giant house spiders, daddy long-legs spiders, and false widows. It also kills other crawling insects such as ants, cockroaches, and woodlice, making it a useful multi-purpose treatment for homes that experience several types of pest. Spray along skirting boards, window frames, door frames, and behind furniture — anywhere spiders are likely to travel.

The professional-grade formulation means you use less product per application compared to household sprays, and the residual effect means fewer reapplications. For anyone who wants the same level of spider control that a professional pest controller would provide, Formula C delivers.

Pros:

• HSE-approved professional-grade formula
• Kills on contact with residual barrier effect
• Effective against all UK spider species
• Multi-purpose — also kills other crawling insects

Cons:

• Chemical product — keep away from children and pets during application
• Strong odour during initial application
• Not suitable for use on soft furnishings

4. Conker Conker Spider Repellent — Best Natural Option

The idea that conkers repel spiders is one of the most enduring folk remedies in the UK. While scientific evidence is inconclusive — a Royal Society of Chemistry study found limited support — many householders swear by placing conkers on windowsills and in corners to keep spiders at bay. The Conker Conker product takes this traditional remedy and packages it in a convenient, ready-to-use format made from real horse chestnuts.

The appeal of this product is its simplicity and total safety. There are no chemicals, no sprays, no strong odours — just a natural product that you place around your home. It is completely safe for households with young children, pets, and anyone who wants to avoid chemical products entirely. Whether the conkers themselves are genuinely deterring spiders or whether the effect is partly psychological, the product has a loyal following of satisfied customers.

If you are looking for a zero-risk option that might help reduce spider numbers and certainly will not cause any harm, Conker Conker is worth trying. For best results, pair it with physical exclusion measures and consider using a peppermint spray alongside it for a multi-layered natural approach.

Pros:

• Completely natural and non-toxic
• Safe for all households including children and pets
• No spraying or chemicals required
• Based on a time-honoured British tradition

Cons:

• Limited scientific evidence for effectiveness
• Needs replacing as conkers dry out
• May not work for serious spider problems

5. Spider Catcher Tool — Best Humane Option

The Spider Catcher is the highest-rated product on our list, and for good reason. Rather than killing or deterring spiders, it lets you remove them humanely and release them outside. The tool works with soft, flexible bristles that gently surround the spider without causing any harm — squeeze the handle and the bristles close around the spider, hold it securely while you carry it to a window or door, then release the handle to set it free.

The extended-reach handle is particularly valuable for those who do not want to get close to spiders. It allows you to catch spiders on ceilings, high walls, and in corners without using a ladder or getting within arm's length. For anyone with a mild spider phobia who still wants to deal with spiders kindly, the spider catcher provides a safe, comfortable distance between you and the spider.

From an environmental perspective, the spider catcher is the ideal solution. It requires no chemicals, produces no waste, and can be reused indefinitely. Spiders are beneficial predators that consume flies, mosquitoes, moths, and other pests — catching and releasing them preserves this natural pest control while keeping your home spider-free.

Pros:

• Highest customer rating on our list (4.5 stars)
• Completely humane — no harm to spiders
• Extended reach for ceilings and high walls
• No chemicals, no waste, reusable forever

Cons:

• Reactive, not preventative — catches one spider at a time
• Requires you to be present when a spider appears
• Does not prevent more spiders from entering

6. Peppermint Oil Spider Deterrent Spray

This budget-friendly peppermint oil spray offers a simple, natural approach to spider deterrence. The formula uses pure peppermint essential oil — the compound most commonly associated with spider repellent properties — in a ready-to-use spray bottle. Apply it along windowsills, door frames, skirting boards, and in corners where spiders tend to congregate. The strong peppermint scent is pleasant for most people and freshens rooms while potentially deterring spiders.

As with all peppermint-based products, it is important to set realistic expectations. While there is some anecdotal evidence that spiders dislike strong peppermint scent, the scientific evidence is limited. This spray works best as part of a broader spider prevention strategy that includes sealing gaps, reducing clutter (spiders love undisturbed hiding spots), and keeping exterior lighting to a minimum (lights attract the insects that spiders feed on).

Pros:

• Affordable budget option
• Natural, non-toxic, eco-friendly
• Pleasant peppermint scent
• Doubles as a room freshener

Cons:

• Limited scientific evidence for spider repellent properties
• Needs frequent reapplication
• Lower customer rating than other options

How to Choose Spider Repellent

Common UK House Spiders

The spider you are most likely to encounter in your home is the giant house spider (Eratigena atrica) — a large, fast-moving spider with a leg span of up to 75mm. It is completely harmless but its size and speed make it startling. The daddy long-legs spider (Pholcus phalangioides) is another common resident, often found in the corners of rooms and cellars, recognised by its extremely long, thin legs and small body. The false widow spider (Steatoda nobilis) has received considerable media attention, but bites are extremely rare and typically no worse than a bee sting. None of the spiders commonly found in UK homes are dangerous to health.

Chemical Sprays vs Natural Deterrents

Chemical sprays like Pest Expert Formula C and Miss Muffet's Revenge contain active ingredients that kill spiders on contact and leave a residual barrier. They are the most effective option for serious spider problems and offer the longest-lasting protection. However, they require caution around children and pets, and some people prefer to avoid chemical products in their home. Natural deterrents like peppermint sprays and conkers are safer and gentler, but their effectiveness is less well-established. For most households, a combination approach works best: chemical spray around the exterior perimeter and entry points, natural deterrents inside.

Does Peppermint Oil Actually Work?

The honest answer is: possibly, but the evidence is limited. A 2018 study published in the Journal of Economic Entomology found that certain essential oils, including peppermint, showed some repellent activity against spiders in laboratory conditions. However, real-world effectiveness in a draughty UK home is likely to be lower than in a controlled lab setting. Peppermint oil is certainly better than nothing — it smells pleasant, is completely safe, and may provide some deterrent effect. But it should be part of a broader strategy, not your only line of defence.

Sealing Entry Points

The single most effective way to reduce spiders in your home is to prevent them from getting inside in the first place. Fit draught excluders on external doors, use gap filler or caulk around pipe entries and cracks in brickwork, and place fine mesh covers over air bricks (without blocking ventilation). Check window seals and replace any damaged or missing weatherstripping. Spiders can squeeze through surprisingly small gaps, so be thorough. Pay particular attention to ground-floor windows, garage doors, and any openings where utilities enter the building.

Seasonal Spider Prevention

September is the peak month for spiders in UK homes. This is mating season for the giant house spider — males abandon their webs and wander in search of females, often ending up indoors in the process. To prepare for the autumn influx, apply spider repellent sprays around your home's exterior in late August, seal any gaps you have identified during the summer, and reduce clutter in garages, sheds, and spare rooms where spiders like to hide. By the time October arrives, the mating season subsides and spider sightings drop significantly.

When Spiders Are Actually Beneficial

Before declaring war on every spider in your home, consider the benefits they provide. A single house spider can consume dozens of flies, mosquitoes, moths, and other pest insects per year. In ecological terms, spiders are one of the most effective natural pest controllers available. If your spider problem is modest — the occasional spider in the bath or one web in a corner — you may find that tolerating a few spiders actually reduces other pest problems. For those who simply cannot share their home with spiders, humane removal with a spider catcher is the most environmentally responsible approach.

Frequently Asked Questions

Are any UK spiders dangerous?

No. The false widow spider can deliver a bite similar to a bee sting, but bites are extremely rare and almost never require medical treatment. There are no medically significant spider species in the UK. If you experience unusual swelling or an allergic reaction after any bite, seek medical advice as a precaution.

Why do I get so many spiders in September?

September is mating season for the giant house spider. Males leave their webs and wander indoors looking for females, which is why you suddenly see large spiders running across floors. The influx usually subsides by late October once mating is complete.

Does peppermint oil really repel spiders?

There is some anecdotal evidence and limited laboratory research suggesting spiders avoid surfaces treated with strong peppermint oil. However, real-world results are inconsistent. It is worth trying as part of a broader prevention approach — it smells pleasant, is non-toxic, and may help — but do not rely on it as your sole spider deterrent.

How do I stop spiders coming through my air bricks?

Fit fine mesh covers (2mm or smaller gaps) over air bricks to keep spiders and other crawling insects out. Crucially, do not block the air brick entirely — they provide essential ventilation to prevent damp. Stainless steel or plastic mesh covers are inexpensive and widely available at DIY stores.

Should I kill spiders or remove them?

Remove them humanely if possible. Spiders are beneficial predators that eat flies, mosquitoes, moths, and other household pests. Use a spider catcher tool or the glass-and-card method to trap and release them outside. Repellent sprays and sealing entry points are better long-term solutions than killing individual spiders.

Do spider repellent plug-ins work?

There is very limited scientific evidence that ultrasonic plug-in devices repel spiders. Independent testing has consistently failed to demonstrate reliable effectiveness. If you want to try one, treat it as a supplementary measure alongside proven methods like sealing entry points and using repellent sprays — but do not rely on it as your only defence.