Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Spray, Strong Killer, Kills on Contact,for Mattress Repellent protection Kills On Contact

Instantly effective. A couple of points; bed-bugs smell! It's an acrid, sour odour that makes you want to take a shower. But it's not you, its them. Entering the bedroom a few hours after spraying, everything was sweet and clean again — and, sure enough, no bites last night. Other point is, if the spray won't work for you, try twisting the nozzle from 'off' to 'on'.

After extensive research on bed bug treatments, I can confidently say that the effectiveness of any product depends on your preparation. Simply spraying a little on your mattress won’t cut it—you need to remove all clothes from cupboards, spray inside them, treat cracks in the floor, the entire mattress, and all parts of the bed frame. However, the bugs can be hiding anywhere and are attracted to the carbon dioxide, so just because you don't see them, doesn't mean they are gone. The pests can hibernate for 6 months without food so it is a pain. This Bed Bug Spray does kill on contact and provides some lasting protection, but if you have a heavy infestation, one bottle won’t be enough. In my case, I had a smaller bedroom with a single bed that was heavily infested, and even with professional-grade treatments like Provecta, C40 WP, and Cimetrol RFU, it still took several applications over multiple visits to fully resolve the issue. While this is a good starting point for minor infestations or preventative treatment, you’ll need several bottles for anything more serious. By the time you buy multiple bottles, you might be better off investing in professional treatment. That’s the main reason I’m giving this 4 stars instead of 5—it works, but it’s pricey for the amount you’ll likely need. Overall, a good product, but be prepared to invest in multiple applications for best results. I also contacted the helpdesk to confirm I could spray this on the mattress and they confirmed, their customer support was very responsive and helpful.

The spray pump cap actually stops working after few squirts of liquid. Not sure why but there is a residue blocking the pipe which appears after a day or two. Maybe the pipe getting corroded.

Better than nothing

IT IS NOT WORKING AT ALL FOR BED BUGS.

Doesn’t work on bedbugs

Got rid of them, but i did also steam the carpets aswell. We didn't see one again after that

This bed bug spray works well and is easy to apply. Does what is says on the tin! The spray bottle is simple to use, and it covers a good area without much effort. It gives peace of mind knowing it kills on contact and can be used on mattresses and around the home. It feels like a strong and reliable product, and it’s good to have on hand if needed. The 500ml size is also decent and lasts a while. Overall, a solid product that does what it promises and is easy to use.