Karlsten Hyper Power Wasp Nest Killer & Hornet Killer 600 ML - Gold Standard High Strength Long Range 5 Metre Spray for Indoor and Outdoor Wasp Nest Removal - Wasp Killer Spray

Absolutely brilliant, had to stick a bit of hose on the end of the nozzle to get into the cavity wall. A good blast and within minutes, there were dead wasps everywhere. No issues since. Used the remnants in the can to treat a small visible nest in a neighbour's shed. A blast to finish off the can, no more wasp activity.

I added the Karlsten Hyper Power 600ml spray to my outdoor kit after spotting a wasp nest near the shed—and it’s been brutally effective. The 5-metre spray range lets me hit nests from a safe distance. No lingering buzz, no second pass needed. The aerosol can is easy to aim, and the burst control gives precision without waste.

Waited till dusk to spray the nest in our porch eaves. The contents came out as a large cloud nowhere near the distance stated. I ended up nearer a metre away. The wasps didn't like it at all and started emerging. We retreated. Two days later I finished the can but there was no reaction this time and I haven't seen any activity since. So I think that first dose did work. I don't think I managed to spray into the hole because I couldn't really see much with that large cloud of stuff but perhaps the ones that came out took the poison back in?

Waste of money !!Really rubbish does not work. Just a big tin of fly spray. Does not spray as a jet more like a cloud.Wasps not affected.Don’t buy this.

There was a nest in my outhouse, if I disturbed the door there were 100s of wasps which would come through a gap. I had no real idea where the nest was inside. Using this spray, over the course of 2 days I blasted the entrance. Most wasps died or became lethargic and easy targets. Once the numbers had reduced, I opened up and found the nest, it was large. Over 2 more days I blasted the nest 2-3 second squirts x2. This killed 99% of the wasps and the remaining few soon disappeared.I have plenty left in the can, I worked very well and I would buy again if required.

Works Well.

This product discharges like an aerosol spray which means the effective range is less than the 5 m claimed. I treated two nests which required multiple applications over 48 hrs. I don’t think I would buy this product again as it’s expensive and only effective if you can get close to the nests.After 72 hrs one of the nests is still active 🤷🏻

Super effective! I had a hornet’s nest in my shed. I’m terrified of the things especially after catching sight of the queen who was MASSIVE. I brought this because of the claimed 5m range. To be fair, when I sprayed the nest I was probably about 3m away from the nest to get the angle right through the shed door. This spray can released a large, targeted cloud of insecticide which dealt with the hornets swiftly and accurately whilst allowing me to keep my distance. Was very pleased with how this performed!