UK spider season is real: from late August through October, house spiders — especially the large house spider (Eratigena atrica) — are far more active indoors as males roam in search of mates and cooler nights push them towards warm, sheltered spaces. If your home suddenly seems to have eight-legged visitors every September, you're not imagining it.
This guide covers how to get rid of spiders naturally and keep them out for good. And because the same deterrent system works across the whole pest family — mice, squirrels, insects, and rodents — the plan below protects your home from far more than just spiders.
Why Spiders Come Inside in Autumn
Spiders don't infest homes the way insects do. They come inside for three reasons:
- Warmth — as outdoor temperatures drop, wall cavities, lofts, and garages become attractive shelter
- Mates — autumn is breeding season; male spiders roam indoors looking for females
- Food — spiders follow their prey, so a home with flies, moths, and other insects is a hunting ground
Understanding the last point matters: if you're seeing lots of spiders, you probably have a smaller insect problem feeding them. The plan below deals with both.
Why Scent Deterrence Is the Modern Solution
Killing individual spiders is a losing game — new ones move in, and some of the old-fashioned deterrents people swear by simply don't hold up. Conkers have no reliable evidence behind them. Home-mixed sprays fade within days. And a deterrent that fades every few days is a deterrent that fails.
Scent-based deterrence works differently: spiders and the insects they hunt navigate by smell, so an area that smells wrong to them is an area they avoid. That's why we designed the Rataway Smart Spray System Dispenser — it disperses our natural, pet-safe deterrent automatically on a timed schedule, maintaining a continuous scent barrier without any reapplication from you. One system, one formula, effective against spiders, insects, mice and rats, and squirrels alike. Place it in a hallway, loft, or garage and let it run.
How to Get Rid of Spiders: The 4-Step Plan
Step 1: Deploy Continuous Scent Deterrence
This is the core of the strategy, and where most DIY approaches fall down. Choose the Smart Spray strength matched to your situation:
- Standard Strength 1L — light activity or prevention in a low-risk area
- Super Strength 1L — regular spider sightings in one or two areas
- Maximum Strength 1L — peak-season pressure or repeated annual invasions, common in rural and semi-rural homes
For whole-property coverage, the Spray Kits bundle the dispenser and refills together:
- Smart Spray Kit 1 — flats and small apartments
- Smart Spray Kit 2 — terraced and semi-detached homes
- Smart Spray Kit 3 — larger homes, lofts plus garage coverage
Step 2: Seal the Entry Points
Spiders enter through the same gaps every time. Walk your home's perimeter and check:
- Gaps around pipework and cables entering walls
- Cracked or poorly sealed window frames and air vents
- Gaps under external doors — a bristle draught excluder or metal strip closes them
- Broken soffits, fascia boards, and gaps where walls meet the roofline
Seal what you can with exterior-grade sealant or fine mesh, and fit fly screens to windows you open regularly — they stop both the insects and the spiders that hunt them.
Step 3: Remove the Prey
Spiders go where the food is, so cutting down indoor insects cuts down spiders.
- Turn off outdoor lights near doors and windows at night, or switch to warm-spectrum bulbs that attract fewer insects
- Keep window sills and corners free of dead insects and cobwebs
- Fix dripping taps and reduce damp — flies and midges breed in moisture
- Keep bins sealed, indoors and out
Step 4: Reduce Harbourage
Spiders hide in quiet, undisturbed clutter.
- Declutter lofts, garages, and under-stairs spaces — the number one indoor spider hideouts
- Store items in sealed plastic boxes rather than cardboard
- Move wood piles and garden refuse away from the house, and shake out outdoor footwear and gloves stored in sheds
- Vacuum corners, ceiling edges, and behind furniture regularly — it removes spiders, egg sacs, and webs in one pass
Where Spiders Commonly Enter UK Homes
| Location | Why It's a Risk | Fix |
|---|---|---|
| Gaps under external doors | Worn thresholds | Bristle excluder or metal strip |
| Window frames and vents | Cracked seals | Exterior sealant or fine mesh |
| Roofline and soffits | Gaps near warm loft air | Repair soffits, mesh vents |
| Chimneys | Open route to warm rooms | Chimney balloon when not in use |
| Pipework and cable gaps | Warm, sheltered route | Seal with foam or mesh |
Frequently Asked Questions
When is UK spider season?
Activity peaks from late August to October, when male spiders roam indoors looking for mates. Sightings taper off through November, but spiders stay active in warm spaces all year.
Do conkers keep spiders away?
There's no reliable evidence they do. The belief is widespread but repeated trials have found no effect. Continuous scent deterrence with a system like the Rataway Smart Spray System is the approach that holds up.
Do I need to keep reapplying a scent deterrent?
With home remedies, yes — every couple of days, which is why they rarely work in practice. The Smart Spray System automates it: timed dispersion keeps the barrier continuous without any reapplication from you.
Does it work on other pests too?
Yes. The same Smart Spray deterrent is effective against mice, rats, squirrels, insects, and rodents generally — so one system protects your home across the whole pest family, not just spiders.
Are UK house spiders dangerous?
Most UK house spiders are harmless to people. The false widow spider can deliver a painful bite comparable to a bee sting, but serious reactions are rare. Spiders are far more of a nuisance than a danger — the problem is the webs, the sightings, and the insects they signal.
The Rataway Approach to Natural Pest Control
At Rataway, we specialise in natural, scent-based deterrents designed for UK homes. The Smart Spray System Dispenser and our range of strengths and kits create a long-lasting, continuous barrier that pests find deeply unpleasant — effective against spiders, insects, mice and rats, and squirrels, with no risk to children, pets, or wildlife.
Whether you're dealing with spiders at the window, mice in the loft, or want to prevent pests before they arrive, explore our full Pest Control collection to find the right solution for your property. For more seasonal guidance, read our guides on getting rid of rats naturally and getting rid of mice naturally.
Last updated: September 2026