Karlsten Spider Killer 5 Litre - Fast and Effective Spider Killer | Lasts 6 Weeks On Surfaces | Kills All Types of Spiders | Ideal for Indoor and Outdoor Use

I first came about this product when I payed over £150 to get pest controllers specialising specifically in spiders, to come make my home spiderproof. They sprayed some cloudy chemical that seemed to work, though not along as they had claimed (6 months). After a few visits by them, they recommended this product after the second summer. I have used it since 2024 and it had worked a treat. I saw 0 spiders, I mean ZERO throughout the year of 2024, two or three in 2025 (months in spring before I used the spray,as I dont use it through the winter months), and so far only once this year (again in early March). I recommend it and confident i will see very little of the monsters again this year.

Does what it needs to keeps that out for good 2 weeks. Is very very strong. You dont wanna breath in the same room for about 4 to 6 hours minimum. Great value for money as it does get rid of creepy crawlers. Does not however kills rats (yes i tried).

…..I’m so terrified of spiders. I use all sorts of everything to try and prevent them, and, I’m so sorry, to also permanently stop them in their tracks. Approximately every 4 weeks, I spray my homemade peppermint oil spray all over my soft furniture, including cushions, and I wipe it around all windows and doors. I place peppermint soaked cotton wool balls in drawers and cupboards. I have done this for years. It is time consuming etc, but well worth it. Peppermint doesn’t stop them permanently though, once a spider (or spiders) are in, they are blinking well, in. This is when this spray then plays its part. Again, every 3 to four weeks, I spray this spray all around my skirting boards / edges of my rooms, all over my home. Hoovering first, and then leaving any hoovering for at least 3 days, after spraying. I spray it using a 5L garden sprayer container - makes the job so much easier and quicker than a handheld spray bottle. My local area also experiences silverfish often. I am not at all scared of silverfish, however they are not nice to have in your home, even though harmless. I find this spray works on both spiders and silverfish. My evidence for that is that I find expired spiders and silverfish around my home occasionally - usually near the skirting board. Whenever I come across a live spider or silverfish - which thankfully isn’t often - they are extremely slow, really slow, strolling (not running at all) across wherever it is they are. It is clear to me on these occasions that they have walked across this spray and are slowly expiring (I’m so sorry) as a result. I also use those electric fly swatter rackets things (1 in every room, including my car) and use this on any live spider or silverfish that I do come across. This method is instant, I find the rackets work better on spiders than they do on flies lol. I have been using this spray for around 4 or so years now. I always have a container of it at the ready I can genuinely and thoroughly recommend it.

I'm not 100% convinced, but having drenched a few rooms in this the spiders are mostly being kept at bay. It doesn't kill them on contact, and doesn't stop them in their tracks... they still sneak in occasionally, but overall a big improvement. Does need to be resprayed regularly, but better than nothing!!! Would definitely recommend it.

As you can see in the video . I was following that big hairy @$$ spider and because i was panicking i might lose it and my daughter get heart attack i just keep spray on it . It took about 2 or 3 minutes to stop moving finally but it killed the little one quicker. In other hand amount i spray on that spider could kill elephant 🐘 🤣🤣😜. I think probably one spray would have been enough and would take same time as that many. So now at least we know it works there is ni smell and i just put it in empty glass cleaner bottle after i washed it probably and let it dry. So far like a good quality because im sure you guys know must this spider repellent or killer don't work. Value for money and easy to spray so gar very happy with performance lets see how long stay active on the floor. Update : it moved around 1 meter before almost stop moving in the picture

This spray did not stop the red spider ants from coming back, the ant s came back within 30 minutes to all surfaces😩😩

Update to add even 4 months on the spiders aren’t back yet! Still see new dead ones where I sprayed this on occasion tho. 73 huge false widows (and way more babies) I had in my garden and never knew as they only came out at night 🤮 all over the kids play kitchen and climbing frame too so they had to go! This stuff was AMAZING, put it in my own pump action spray tank and killed every one of them in a couple of minutes 🫶🏼 Haven’t had any back since either as I used it to spray around every window and door and all down the fence panels and side of shed!

We've long had a problem with spiders here in the summer, with sizes reaching a point of discomfort for even the most stalwart combatant. We had deployed all manner of technology and homebrew to dissuade them, yet they persisted at every corner. Then this past summer, the heatwave allowed the spider menace to invade in force with dozens of the very largest we'd ever seen. All hope seemed to be lost. The shed and attic belonged to the spiders, and the house was falling one room at a time to these new monstrosities, each with their own health bar. Then with a ring at the door, hope arrived. The bottle was damaged and the seal broken.. I looked on in dejected defeat at the prospect of waiting for a replacement, so nay I said to the honourable Amazon driver, we'll put it to use. And put it to use we did. The remaining 4.5l of poison went straight into a weed sprayer and we got to spraying around the exterior windows. Spiders dropped from the stonework in their dozens, desperately grabbing at the wet webs spelling their doom. This was a promising sign. We then took to the exterior of the shed, spraying under the eaves and into all the gaps in the wood work. The next day, we inspected that there wasn't a spider left alive - their webs having carried the poison to even the monstrosities therein. We've since taken the house, and are holding the line. Their numbers only seem to be growing, and the weather has been keeping our perimeter efforts subdued, but we persevere, and no spider has survive trespass in our sanctuary. We look to retaking the attic in the coming weeks.