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Identifying and Managing UK Spiders That Bite

  • Writer: Michael Sewell
    Michael Sewell
  • Oct 7
  • 4 min read

Spiders are everywhere, especially in homes and gardens. Most of them are harmless and even helpful, munching on pesky insects. But what about those rare occasions when a spider bites? It’s natural to feel uneasy, especially if you spot a spider in your home and wonder if it could bite you or your family. Let’s dive into the world of UK spiders and get to know which ones might bite, how to spot a bite, and what you can do about it.


Understanding the UK Spiders Biting Guide


When it comes to spiders in the UK, the good news is that very few are dangerous. Most spiders you’ll find around your home or garden are shy and prefer to avoid humans. However, a few species can bite if they feel threatened. Knowing which spiders are likely to bite and how to handle them can save you a lot of worry.


The most common spiders that might bite in the UK include:


  • False Widow Spider: This is the one that often gets the most attention. It’s a bit bigger than your average house spider and has a shiny, dark body with a distinctive pattern. Its bite can cause mild to moderate pain and swelling but is rarely serious.

  • Woodlouse Spider: This spider has large jaws and can deliver a painful bite, but it’s not dangerous. It usually lives under logs or stones.

  • Tube Web Spider: Found in gardens and sheds, it can bite if provoked but generally isn’t aggressive.


Most other UK spiders are harmless and won’t bite unless you handle them roughly. If you want to learn more about spiders that bite, this guide will help you identify and manage them safely.



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How to Identify UK Spiders That Might Bite


Identifying spiders can be tricky, but focusing on a few key features helps. Here’s what to look for:


  • Size and Shape: The false widow is about 1.5 cm long, with a bulbous, shiny abdomen. Woodlouse spiders are smaller but have large, visible jaws.

  • Colour and Markings: False widows have a dark brown or black body with cream or white markings. Woodlouse spiders are reddish-brown with a flat body.

  • Habitat: False widows like dark corners indoors or sheltered outdoor spots. Woodlouse spiders prefer damp places like under logs or stones.

  • Behaviour: Most biting spiders are shy and only bite if trapped or provoked.


If you spot a spider matching these descriptions, it’s best to avoid touching it. Use a jar and a piece of paper to safely catch and release it outside.


Eye-level view of a woodlouse spider under a log in a garden
Woodlouse spider under garden log

How to Tell if You've Been Bitten by a Spider in the UK?


Spider bites in the UK are rare, but it’s good to know the signs just in case. Here’s what to watch for:


  • Initial Pain or Redness: A bite might feel like a sharp pinprick or sting. The area may turn red and swell.

  • Itching or Burning: Some bites cause itching or a burning sensation that lasts a few hours.

  • Blister or Lump: In some cases, a small blister or lump can form at the bite site.

  • Mild Flu-like Symptoms: Rarely, you might feel tired, have a headache, or mild fever.


Most spider bites heal on their own within a few days. However, if you notice severe pain, spreading redness, swelling, or signs of infection like pus, it’s important to seek medical advice.


What to do if bitten:


  1. Clean the bite with soap and water.

  2. Apply a cold compress to reduce swelling.

  3. Take over-the-counter pain relief if needed.

  4. Avoid scratching to prevent infection.

  5. Monitor the bite for worsening symptoms.


If you’re unsure or feel unwell, don’t hesitate to contact a healthcare professional.


Close-up view of a red swollen area on skin from a spider bite
Spider bite on skin showing redness and swelling

Managing Spiders in Your Home and Garden


You don’t have to live in fear of spiders. Managing them is straightforward and helps keep your home safe and comfortable.


  • Keep Your Home Clean: Regular vacuuming and dusting remove spider webs and reduce insects that spiders feed on.

  • Seal Entry Points: Check windows, doors, and cracks in walls. Use weather stripping or caulk to block gaps.

  • Reduce Clutter: Spiders love hiding in piles of clothes, boxes, or garden debris. Keep these areas tidy.

  • Use Natural Deterrents: Essential oils like peppermint or eucalyptus can repel spiders. Spray diluted solutions around entry points.

  • Outdoor Maintenance: Trim bushes and keep firewood away from your house to reduce spider habitats.


If you find a spider indoors, try to catch and release it outside rather than killing it. Spiders play a vital role in controlling other pests.


For persistent spider problems or if you’re worried about bites, professional pest control services like Full Guard Pest Control in Berkshire offer safe, effective solutions. They can identify the species and treat your home to prevent future infestations.


When to Call in the Experts


Sometimes, spiders can become a real nuisance or pose a risk, especially if you spot multiple false widows or other biting species. If you notice:


  • Frequent spider sightings indoors

  • Multiple bites or unexplained skin irritations

  • Difficulty managing spiders on your own


It’s time to call in the pros. Full Guard Pest Control provides expert advice and treatments tailored to your home. Their goal is to keep your space pest-free with guaranteed results.


Remember, prevention is key. Regular inspections and treatments can stop spider problems before they start.



Spiders might seem scary, but with the right knowledge, you can handle them calmly and confidently. Keep an eye out for the few UK spiders that bite, know the signs of a bite, and take simple steps to manage your home environment. If you ever feel overwhelmed, professional help is just a call away. Stay safe and spider-smart!

 
 
 

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