--- product_id: 48276045 title: "Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K..." brand: "karlsten" price: "$108.11" currency: USD in_stock: true reviews_count: 8 category: "Karlsten" url: https://www.desertcart.ec/products/48276045-karlsten-bed-bug-killer-spray-500ml-fast-acting-bedbug-spray store_origin: EC region: Ecuador --- # Instant kill on contact 6-week protective bug barrier UK HSE-approved quality Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... **Brand:** karlsten **Price:** $108.11 **Availability:** ✅ In Stock ## Summary > 🛏️ Sleep tight, bed bugs fight — Karlsten’s got your back! ## Quick Answers - **What is this?** Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... by karlsten - **How much does it cost?** $108.11 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/48276045-karlsten-bed-bug-killer-spray-500ml-fast-acting-bedbug-spray) ## Best For - karlsten enthusiasts ## Why This Product - Trusted karlsten brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision-Targeted Formula:** Powered by cypermethrin, specifically engineered to eradicate bed bugs effectively - • **Long-Lasting Defense Barrier:** Forms a protective shield that repels and kills for up to 6 weeks 🛡️ - • **Trusted UK Quality Assurance:** HSE-registered and rigorously tested for safe home use 🇬🇧 - • **Easy & Economical Application:** One spray covers mattresses and furniture, saving time and repeated treatments - • **Lightning-Fast Bed Bug Elimination:** Kills bed bugs instantly on contact for immediate relief ⚡ ## Overview Karlsten Bed Bug Killer Spray is a UK-made, HSE-approved fast-acting insecticide formulated with cypermethrin to kill bed bugs instantly and create a lasting protective barrier for up to six weeks. Designed for safe home use on mattresses and furniture, it offers an economical, easy-to-apply solution trusted by thousands to reclaim your living space from bed bugs and other pests. ## Description From the manufacturer Karlsten Dual Bug & Insect Destroyer: Bed Bug Killer Spray Instant, fast action protection from bed bugs. Looking for one of the best protection and method of destruction for bed bugs? Karlsten finally have the answer. After meticulous research and development, we believe we have the best Bed Bug Killer Spray that forms the ultimate bed bug protection for your home. 100% satisfaction assured. We are very proud of our products and they all undergo strict quality assurance processes. Our Bed Bug Killer Spray has been developed to provide a quick, easy and long-lasting pest control specifically for bed bugs. You can buy directly from us with confidence with our quality assured and 100% satisfaction policy. Innovative bug barrier. Karlsten Bug & Insect Destroyer Sprays feature innovative bug barrier technology. Unlike other pest control products that only last several hours, our sprays form a bug barrier around the sprayed area which lasts up to six weeks. This is an economical, effective and hassle-free solution for controlling bed bugs. Fully HSE approved. 6 week protection from initial spray. Specifically targets bed bugs. One of top-rated UK manufacturer. Lightning fast formula kills bed bugs instantly. Humane method of pest control. Karlsten quality guarantee. Why Choose Karlsten Bed Bug Killer Spray? A bug barrier is in place for up to six weeks after the area has been sprayed forming an instant bed bug barrier that kills bed bugs on contact with the powerful cypermetherin. There are many reasons to choose Karlsten, a top-rated UK pest control company. We believe we have developed one of the best killer spray for bed bugs that is fast, long-lasting, economical and easy to use. Specific formulations have been used to target bed bugs including cypermetherin which is a highly effective destroyer. Review: Fantastic product - highly recommend the spider spray - I can’t rate this product highly enough and am so surprised that there are quite a lot or reviews that say it doesn’t work. We have just moved into a house with a major false widow spider issue in the conservatory. There is a batton that runs along the whole width of the room that you can’t get behind and it appeared to be full of false widows. They would come out to eat on their webs but you could never kill one as they’d just disappear behind the batton. I’d wreck the webs thinking they’d move on but they’d just rebuild overnight. I have a major fear of spiders, especially false widows as they bite, so said to my husband we need to tackle this head on and buy a killer spray! This spray had loads of reviews so thought I’d give this a go although did feel it pricy at £13.99 but I was so desperate to get rid of the spiders I bought it. Well, no more false widows anywhere so as far as I’m concerned it has been worth every penny - all the webs were empty of spiders the following day (I kept checking) and before I cleaned the webs away, the webs had bugs in them which clearly weren’t being eaten so proof to me it had worked as I was seeing the spiders move onto the webs daily to eat previously. We then had one really huge false widow elsewhere (I didn’t know they could get so big) and hubbie sprayed that directly - it didn’t die instantly but it forced it out of its hiding place and whilst I could tell it was dying I killed it with a fly swat just to be on the safe side. The spray worked immediately on smaller ones nearby that I didn’t even know were there. The huge added bonus about this spray however is that it’s also killing flies and wasps that happen to fly into the conservatory - we aren’t spraying them - there’s obviously residue spray in the room from spider gate and that’s killing the flying unwelcome guests too so the statement that it works for up to 6 weeks does appear to be true. If we get a butterfly or bumble bee in we are carefully catching that and releasing it as I do suspect it would kill those too which we don’t want. Anyway, couldn’t be happier with this product. It is a shame it is released as a liquid as we do have to wipe up the excess after spraying - an atomised spray (that comes out like furniture polish spray) would be much better in my opinion and easier to spray in a targeted fashion - the liquid comes out with a very wide spread too and sometimes you just want a direct shot on one bug rather than a sweeping cover. It doesn’t have a nasty or lingering smell and I’m reassured by the safety statements on the listing too - I don’t like the idea of spraying nasty chemicals around my son especially when they appear to kills things for weeks after spraying but it says tested as safe for use in homes so I have to rely on that and was a big part of why I felt happy to try it in the first place. If the false widows didn’t give such nasty bites we’d let them be but they do so we don’t and thanks to this product we are false widow free now! We will continue to spray as a preventative measure every 5-6 weeks as the lasting impact of this spray will help keep them out of the house. Review: After a lot of research... - 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. ## Features - Use biocides safely. Always read the label and product information before use. - Very toxic to aquatic life with long lasting effects. - Very toxic to aquatic life. - Eradicate Bed Bugs Fast: Unlike ordinary insect killers, Karlsten bed bug spray delivers a powerful one-two punch. It eliminates bed bugs instantly while leaving a long-lasting barrier to prevent future infestations. Rest easy, knowing your home is protected. - Break the Bed Bug Cycle: Don't let ineffective sprays prolong your bed bug woes. Karlsten's targeted formula with cypermethrin specifically kills bed bugs, preventing them from spreading and taking over your home. Achieve lasting results with a single application. - Lasting Defense: Experience fast-acting relief from bed bugs with Karlsten's spray. This HSE-registered formula kills bed bugs on contact and continues to eliminate them for days after application. - Trusted Quality & Safe Application: This UK-tested spray is proven safe for use within your home. While the spray tackles bed bugs on mattresses and furniture, remember to wash bedding in hot water for complete elimination. (Keep pets and children away during application.) - Our Story: Karlsten provides a complete range of rigorously tested solutions. Our targeted repellents and control methods address everything – from deterring curious cats and foxes in your garden to eliminating unwanted insects. Choose the powerful options that empower you to reclaim your haven, indoors and out. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N4SEY0O | | Active Ingredients | cypermethrin | | Active ingredients | cypermethrin | | Best Sellers Rank | 403 in Garden ( See Top 100 in Garden ) 38 in Ant Control | | Brand | Karlsten | | Brand Name | Karlsten | | Country of Origin | United Kingdom | | Customer Reviews | 4.1 out of 5 stars 5,016 Reviews | | Item Form | Spray | | Item Type Name | Karlsten Bed Bug Killer Spray/Treatment Fast Acting Elimination Of Irritating Bed Bugs Kills On Contact, Formulated To kill Bed Bugs In A Fast & Effective Way 500Ml White or Black Trigger Included | | Item Weight | 570 Grams | | Item form | Spray | | Item weight | 570 Grams | | Liquid Volume | 500 Millilitres | | Liquid volume | 500 Millilitres | | Manufacturer | Lodi uk | | Model Number | 2010 | | Part Number | 2010 | | Specification Met | HSE 10668 | | Specification met | HSE 10668 | | Target Species | Insects | | Unit Count | 1.0 count | ## Product Details - **Active ingredients:** cypermethrin - **Brand:** Karlsten - **Item form:** Spray - **Item weight:** 570 Grams - **Liquid volume:** 500 Millilitres ## Images ![Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... - Image 1](https://m.media-amazon.com/images/I/61T0L-3yyWL.jpg) ![Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... - Image 2](https://m.media-amazon.com/images/I/61iNlXEiNOL.jpg) ![Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... - Image 3](https://m.media-amazon.com/images/I/61SVy-aDN-L.jpg) ![Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... - Image 4](https://m.media-amazon.com/images/I/71ESkBAo1jL.jpg) ![Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug K... - Image 5](https://m.media-amazon.com/images/I/61R+Qie11vL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Sprayer ceased to work** A: If you look at the reviews, "failure to spray" has a frequent walk-on part. Presumably it is just badly designed or built. I overcame the problem by cannibalising the squirting mechanism from an almost empty spray of similar design and fit. Of course, that works so that you can use the contents but doesn't address the design. I was going to complain until I realised what a common fault it was with the product and concluded that it was no use knocking if there's no-one in! Best wishes Fontes **Q: Can it be sprayed on leylandi** A: 0To kill spiders on the trees? or to kill the trees?- I think it only does spiders. ( Elsan, camping toilet bleach on the roots, will kill leylandi) **Q: i sprayed this around the flat very generously, do you think if there was any spiders around they would have come out to run for their lives?** A: It deff kills spiders , if you spray them directly. Not sure how long it lasts as a deterrent. **Q: Is it safe to use the moth killer in your bedroom?** A: Save to use anywhere. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fantastic product - highly recommend the spider spray *by S***E on 4 July 2026* I can’t rate this product highly enough and am so surprised that there are quite a lot or reviews that say it doesn’t work. We have just moved into a house with a major false widow spider issue in the conservatory. There is a batton that runs along the whole width of the room that you can’t get behind and it appeared to be full of false widows. They would come out to eat on their webs but you could never kill one as they’d just disappear behind the batton. I’d wreck the webs thinking they’d move on but they’d just rebuild overnight. I have a major fear of spiders, especially false widows as they bite, so said to my husband we need to tackle this head on and buy a killer spray! This spray had loads of reviews so thought I’d give this a go although did feel it pricy at £13.99 but I was so desperate to get rid of the spiders I bought it. Well, no more false widows anywhere so as far as I’m concerned it has been worth every penny - all the webs were empty of spiders the following day (I kept checking) and before I cleaned the webs away, the webs had bugs in them which clearly weren’t being eaten so proof to me it had worked as I was seeing the spiders move onto the webs daily to eat previously. We then had one really huge false widow elsewhere (I didn’t know they could get so big) and hubbie sprayed that directly - it didn’t die instantly but it forced it out of its hiding place and whilst I could tell it was dying I killed it with a fly swat just to be on the safe side. The spray worked immediately on smaller ones nearby that I didn’t even know were there. The huge added bonus about this spray however is that it’s also killing flies and wasps that happen to fly into the conservatory - we aren’t spraying them - there’s obviously residue spray in the room from spider gate and that’s killing the flying unwelcome guests too so the statement that it works for up to 6 weeks does appear to be true. If we get a butterfly or bumble bee in we are carefully catching that and releasing it as I do suspect it would kill those too which we don’t want. Anyway, couldn’t be happier with this product. It is a shame it is released as a liquid as we do have to wipe up the excess after spraying - an atomised spray (that comes out like furniture polish spray) would be much better in my opinion and easier to spray in a targeted fashion - the liquid comes out with a very wide spread too and sometimes you just want a direct shot on one bug rather than a sweeping cover. It doesn’t have a nasty or lingering smell and I’m reassured by the safety statements on the listing too - I don’t like the idea of spraying nasty chemicals around my son especially when they appear to kills things for weeks after spraying but it says tested as safe for use in homes so I have to rely on that and was a big part of why I felt happy to try it in the first place. If the false widows didn’t give such nasty bites we’d let them be but they do so we don’t and thanks to this product we are false widow free now! We will continue to spray as a preventative measure every 5-6 weeks as the lasting impact of this spray will help keep them out of the house. ### ⭐⭐⭐⭐ After a lot of research... *by M***. on 18 March 2025* 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. ### ⭐⭐⭐⭐⭐ Spider spray *by A***R on 24 June 2026* This spider killer works really well ## Frequently Bought Together - Karlsten Bed Bug Killer Spray, 500ml - Fast Acting Bedbug Spray, Strong Bug Killer, Kills on Contact, Bed Bug Spray for Mattress, Bug Repellent, Bed Bug Remover for Indoor and Outdoor Use - Zero In Bed Bug & Dust Mite Killer – Bed Bug Spray for Mattress, Bed Frames & Furnishings - Fast-Acting Aerosol Surface Treatment for Immediate Results - Prevents Allergies - 300ml - Zero In Bed Bug Trap - 5-Pack, Ready-To-Use, Poison-Free Treatment, Bed Bug Detector, Monitors Infestation --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ec/products/48276045-karlsten-bed-bug-killer-spray-500ml-fast-acting-bedbug-spray](https://www.desertcart.ec/products/48276045-karlsten-bed-bug-killer-spray-500ml-fast-acting-bedbug-spray) --- *Product available on Desertcart Ecuador* *Store origin: EC* *Last updated: 2026-07-29*