Best Insect Killers & Repellents — Karlsten (2026)
1 insect killers & repellents matching brand “Karlsten”, hand-picked from UK Amazon listings.
#1 Pick
Karlsten Fly Killer Spray 600ml – 5 Metre Hyper Power Nozzle – Ultra-Strong Fly Spray for Home & Outdoor UseRated 4.4 out of 5 stars (122)
- Aerosol Spray
£16.99
Pros
- Large 600ml can lasts longer between refills
- 5-metre hyper power nozzle for hard-to-reach spots
- Effective on flies both indoors and outdoors
Cons
- Newer brand with a smaller review base than market leaders