Karlsten Wasp & Nest Killer Spray 300ml Fast Acting, Kills Wasps & Hornets

Brilliant. I noticed a hole in my garden with a lot of wasp activity going in and out. Bought this. Wore long sleeves and trousers and a coat with a hood pulled up. Approached the hole and sprayed over it and towards it. Wasn’t sure it was going to work to be honest as it’s a light aerosol that comes out. Repeated the process 2 hours later just for good measure. Checked later that day and the next day. Wasps gone! Brilliant stuff. The only thing I’d say is to be careful with breathing it in. It smelt quite strong. I used half a can.

Great product, sprayed through air brick at nest I couldn’t see, need to get close to target but extremely effective at killing wasps. Unfortunately due to me spraying the outside this forced wasps to find a route in to my bathroom. The state they were in 18 hours later they weren’t a worry. Couldn’t even fly by this point, all put out of their misery by the electro bat!!! Unfortunately the spray can’t help with my conscience after my mini genocide but great product!!!!😆

This product did the job for wasp nest on my roof

I am pleased with the effectiveness. After one treatment, there were only two wasps around on inspection this morning. I shall give it another go tonight. The only fault I found was that, for a continuous spray, the can needs to be held upright, which is impossible on ground holes... so I had to keep putting it upright every couple of seconds, and the force is not so intense. No big deal, I suppose.

Initially this was fantastic.. we sprayed the nest as directed and no wasps in the house but by 6am the next morning, there were flying wasps in the houses again... sleeper, slower and easier to kill but 5 days later and there are *still* 12-15 sleepy wasps a day and one of the children was stung by one.... I wouldn't buy it again

I don't often write reviews, but I felt compelled to this time. Prior to ordering anything I read reviews and make a judgement when I read negative ones. I read a few negative reviews about this product, but all wasp nest killers had some. I also asked my AI bot on my phone how to remove a wasps nest, and based on this, the steps I recommend are as follows... 1 - Wait until it is dark. Even as the sun was setting, the wasps were still very active. I started approx 1hr after it got dark. 2 - Get a light to work with, but make the light red (apparently wasps aren't bothered about red light). I had an LED floodlight, so I covered the lens with clear sellotape then drew all over with a red marker pen. Red acetate or gel can be used to cover the light too, but I didn't have any. 3 - I covered up head-to-toe. Hood, face mask, gloves, all points of entry taped up with paper masking tape. As it turned out, I don't think this was necessary, but I didn't want to take a chance. 4 - Lay out a tarp or similar under the nest if possible. Makes clean-up easier. 5 - Gain access to the nest, pre-shaken can in hand. Mine was easy as it was in the roof space of my shed. In my initial adrenaline fueled panic, I dropped the nozzle from the can, so be careful about that. 6 - Spray like your life depends on it. The wasps were definitely sleepy, so it wasn't the battle I was expecting. If it moves, spray it. Spray the nest all over and around the area. I was wearing an air-fed mask, but if you don't have one, you might need to step away at times to get fresh air. 7 - Knock the nest off the roof with a piece of wood. I used a pallet slat to scrape off all residue. It is a bit of a bombsite due to the papery nature of the nest, so I wouldn't do it if it was too windy (or that might be better in your circumstance). 8 - I cleaned up the next day once it became light - the battle was won in 2 minutes with the spray can. 9 - Spray the area that the nest was in with a bleach/water solution to remove the pheromones that attract the queens in early Spring. You can also use a mixture of water, dish soap, and peppermint or eucalyptus oil to disguise the pheromones. I have only just removed the nest, so I can't comment if the post removal measures work yet. I can however wholeheartedly endorse this product. I will be purchasing it again if I need to - I still have half a can left after all my manic spraying.

Excellent. I sprayed the nest several times but the following day they were all dead.

Its ok