The false widow is the UK’s most talked-about spider: shiny, bulbous, capable of a bite - and the subject of far more fear than it deserves. If you are seeing them regularly indoors, in the garage or around windows, JG Pest Control can confirm the species and treat the infestation properly. We are open every day except Christmas Day, early until late, with same-day visits often available.
How to identify a false widow
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Body
a glossy, rounded, dark brown abdomen - often described as “like a shiny coffee bean” - with cream or pale markings on top, sometimes resembling a skull pattern.
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Size
body up to about 1.4cm in the noble false widow (the largest UK species), with a leg span around the size of a 50p coin.
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Web
an untidy tangle of criss-cross strands in corners, window frames, sheds, garages, conservatories and around outdoor furniture - not the neat spiral of a garden spider.
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Habits
mostly nocturnal and shy, sitting in or near the web rather than wandering across rooms.
The noble false widow (Steatoda nobilis) arrived in the south of England over a century ago and has spread steadily north, helped by warm buildings. Several harmless native spiders - especially the missing sector orb weaver and lace web spiders - are mistaken for it constantly.
Are false widows dangerous?
A false widow can bite if trapped against skin or pressed - clothes left on the floor, gardening gloves, that kind of situation. For most people the bite is comparable to a wasp sting: sharp pain, local swelling and redness that settles within a few days. Severe reactions are rare and usually relate to infection of the bite site or an unusual sensitivity, so keep any bite clean and see a pharmacist or GP if it worsens. The spiders are not aggressive and do not seek people out - but we completely understand that “mostly harmless” is not reassuring when they are breeding in your conservatory.
Professional false widow treatment
One spider can be relocated with a glass and a postcard. An established population - webs reappearing in the same corners, spiderlings around window frames in autumn, egg sacs in the shed - justifies treatment. Our technicians treat the harbourage areas the spiders actually use, remove webbing and egg sacs, and advise on the proofing and decluttering that stops the cycle repeating. See our spider pest control service for the full treatment detail. Every visit is by an RSPH (BPCA) Level 2 certified or trainee technician and the work is guaranteed.
Reducing false widows around your home
- Vacuum corners, window reveals and behind furniture regularly - eggs and webs go with the dust.
- Declutter sheds, garages and conservatories, the three classic strongholds.
- Shake out gloves, boots and clothing stored in garages or outbuildings before use.
- Seal obvious gaps around window and door frames, vents and pipework.
Frequently asked questions
A shiny, rounded dark-brown abdomen with cream markings, legs spanning roughly a 50p coin, sitting in an untidy tangle web in a corner, window frame, shed or conservatory.
For most people it is similar to a wasp sting and settles within days. Keep the area clean and seek medical advice if swelling spreads or the site looks infected. Severe reactions are rare.
Autumn is mating season, when males wander and spiderlings disperse - and warm, cluttered, undisturbed spaces let populations build. Regular sightings in the same spots usually mean an established population worth treating.
No - they follow shelter and insect prey, not dirt. Conservatories, garages and window frames suit them in any home.
Treatment plus proofing and housekeeping brings long-lasting control. Because spiders can wander in from outside, we also advise on the entry points and conditions that attracted them.