Best Insect Killers & Repellents UK (2026)
Fly killers, insect sprays and repellents for indoor use.
#1 Pick
Raid Rapid Action Fly & Wasp Killer, Fly Killer Spray for Indoor Use, 300mlRated 4.5 out of 5 stars (8,214)
- Aerosol Spray
£3.99
Pros
- Rapid knockdown of flies and wasps on contact
- Compact 300ml can fits in a kitchen cupboard
- Widely available, well-known trusted brand
Cons
- Strong odour immediately after spraying
#2 Pick
Raid Plant Based Wasp & Mosquito Killer, Aerosol Fly Killer Spray, Naturally Derived Ingredients, 300mlRated 4.3 out of 5 stars (1,256)
- Aerosol Spray
£4.49
Pros
- Naturally derived botanical ingredients
- Effective against wasps and mosquitoes indoors
- Lower odour than traditional aerosol sprays
Cons
- Shorter knockdown range than standard chemical sprays
#3 Pick
Rentokil RKLPS136 Insectrol Insect Killer 250ml AerosolRated 4.4 out of 5 stars (2,103)
- Aerosol Spray
£5.99
Pros
- Kills fleas, ants, cockroaches and other crawling insects
- Trusted Rentokil pest control brand
- Long-lasting residual protection
Cons
- 250ml can covers a limited area per application
#4 Pick
Zero In Fly and Wasp Killer - 300ml Aerosol, Controls Flying Insects and Bugs in the Home, Fast Action FormulaRated 4.4 out of 5 stars (987)
- Aerosol Spray
£10.00
Pros
- Instant knockdown of flies, wasps and other flying insects
- Ready-to-use, no mixing required
- Budget-friendly everyday household spray
Cons
- Needs reapplying for ongoing infestations
#5 Pick
Zero In High Voltage Insect Killer, Poison-Free Bug Zapper, UV Light Lamp, Kills Flies, Midges and MosquitoesRated 4.2 out of 5 stars (1,543)
- Mains-Powered UV Zapper
£24.99
Pros
- Poison-free UV light attracts and zaps flying insects
- Reusable mains-powered unit, no ongoing chemical cost
- Good for kitchens and utility rooms
Cons
- Mains cable limits placement options