--- product_id: 47968534 title: "Spider Killer Spray & Repellent 500ml | Indoor & Outdoor Use | Kills & Repels Spiders Lasts Up to 6 Weeks Indoor & Outdoor Use 500ml Ready-to-Use Spray HSE Registered Product 10668" brand: "karlsten" price: "$43.63" currency: USD in_stock: true reviews_count: 8 category: "Karlsten" url: https://www.desertcart.us/products/47968534-spider-killer-spray-and-repellent-500ml-indoor-and-outdoor-use store_origin: US region: United States of America --- # 6 weeks residual protection fast-acting cypermethrin formula indoor & outdoor versatile use Spider Killer Spray & Repellent 500ml | Indoor & Outdoor Use | Kills & Repels Spiders Lasts Up to 6 Weeks Indoor & Outdoor Use 500ml Ready-to-Use Spray HSE Registered Product 10668 **Brand:** karlsten **Price:** $43.63 **Availability:** ✅ In Stock ## Summary > 🕷️ Say goodbye to spiders — fast, lasting, and hassle-free! ## Quick Answers - **What is this?** Spider Killer Spray & Repellent 500ml | Indoor & Outdoor Use | Kills & Repels Spiders Lasts Up to 6 Weeks Indoor & Outdoor Use 500ml Ready-to-Use Spray HSE Registered Product 10668 by karlsten - **How much does it cost?** $43.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/47968534-spider-killer-spray-and-repellent-500ml-indoor-and-outdoor-use) ## 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 - • **Instant Knockdown Power:** Fast-acting cypermethrin formula kills spiders on contact for immediate relief - • **Economical & Hassle-Free:** 500ml spray covers large areas, creating a spider-free zone with minimal effort - • **HSE Registered & Trusted:** Complies with UK safety standards (HSE 10668) for peace of mind in homes and offices - • **Long-Lasting Spider Barrier:** Up to 6 weeks of continuous spider protection without reapplication - • **Versatile Indoor & Outdoor Use:** Safe and effective for floors, walls, corners, and cracks both inside and outside ## Overview Karlsten Spider Killer Repellent Spray delivers a powerful cypermethrin formula that kills all spider species on contact and forms a protective barrier lasting up to 6 weeks. Registered under HSE 10668, this 500ml spray is designed for both indoor and outdoor use, providing fast, effective, and long-lasting spider control for homes, offices, and gardens. ## Description From the manufacturer Karlsten Dual Bug & Insect Destroyer: Spider Killer Spray Instant, fast action protection from spiders. Looking for the best protection and method of destruction for spiders? Karlsten finally have the answer. After meticulous research and development, we believe we have the best Spider Killer Spray that forms the ultimate spider protection for your home. 100% satisfaction auured. We are very proud of our products and they all undergo strict quality assurance processes. Our Spider Killer Spray has been developed to provide a quick, easy and long-lasting pest control specifically for spiders. 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 spiders. Fully HSE approved. 6 week protection from initial spray. Specifically targets spiders. One of the top-rated UK manufacturers. Lightning fast formula kills spiders instantly. Humane method of pest control. Karlsten Quality Guarantee. Why Choose Karlsten Spider Killer Spray? A bug barrier is in place for up to six weeks after the area has been sprayed forming an instant spider barrier that kills spiders 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 the best killer spray for spiders that is fast, long-lasting, economical and easy to use. Specific formulations have been used to target spiders 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: Spider killer that works. - Having read a variety of reviews, I wasn't sure how effective this spray would be (if at all). We had a large range of spiders in the garage (which is attached to the house) including a large number of false widows. In the annual clear out of the garage I thought it would be best to de-spider the garage too. I sprayed a reasonable amount onto the roof space and around the door (where there are lots of hiding places) and onto quite a few of the false widows. It didn't kill them instantly and most just backed away into webs. Probably not ideal for indoors and the big ones that run across the floor. Checking the following morning, there were lot's of dead spider bodies on the floor. It appears to good for garages and sheds and under cupboard spaces. Not sure if it will keep them away, but for now it did what I wanted. I'll update the review in a few weeks to see if any have returned. ## 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. - Effective Spider Control – Kills all species of spiders, including house and garden spiders, with our fast-acting, HSE 10668 registered formula. - Long-Lasting Protection – Provides up to 6 weeks of residual protection, creating a spider barrier that prevents new infestations without constant reapplication. - Cypermethrin Formula – Kills fast and keeps spiders out. The powerful formula leaves a lasting residue to keep your home spider-free. - Easy to Use & Effective Coverage – Simply spray the Karlsten Spider Killer for fast, thorough coverage of your home, ensuring spider-free zones in both indoor and outdoor areas. Ideal for floors, walls, corners, and cracks. - HSE 10668 Registered – Safe for use in homes, dorms, and offices, adhering to Environmental Protection Agency standards for effective spider control. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01MUE11PD | | Active Ingredients | cypermethrin | | Active ingredients | cypermethrin | | Best Sellers Rank | 647 in Garden ( See Top 100 in Garden ) 100 in Indoor Insect Control | | Brand | Karlsten | | Brand Name | Karlsten | | Country of Origin | United Kingdom | | Customer Reviews | 4.1 out of 5 stars 2,825 Reviews | | Item Form | Spray | | Item Type Name | Spider Spray for Instant Action Kills on Contact White or Black Trigger Included | | Item Weight | 0.02 Kilograms | | Item form | Spray | | Item weight | 0.02 Kilograms | | Liquid Volume | 500 Millilitres | | Liquid volume | 500 Millilitres | | Manufacturer | lodi uk | | Model Number | 2012 | | Part Number | 2012 | | Specification Met | HSE 10668 | | Specification met | HSE 10668 | | Target Species | spiders | | Unit Count | 25.0 count | ## Product Details - **Active ingredients:** cypermethrin - **Brand:** Karlsten - **Item form:** Spray - **Item weight:** 0.02 Kilograms - **Liquid volume:** 500 Millilitres ## Images ![Spider Killer Spray & Repellent 500ml | Indoor & Outdoor Use | Kills & Repels Spiders Lasts Up to 6 Weeks Indoor & Outdoor Use 500ml Ready-to-Use Spray HSE Registered Product 10668 - Image 1](https://m.media-amazon.com/images/I/51vPCBYlj6L.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. ### ⭐⭐⭐⭐ Spider killer that works. *by T***O on 27 October 2021* Having read a variety of reviews, I wasn't sure how effective this spray would be (if at all). We had a large range of spiders in the garage (which is attached to the house) including a large number of false widows. In the annual clear out of the garage I thought it would be best to de-spider the garage too. I sprayed a reasonable amount onto the roof space and around the door (where there are lots of hiding places) and onto quite a few of the false widows. It didn't kill them instantly and most just backed away into webs. Probably not ideal for indoors and the big ones that run across the floor. Checking the following morning, there were lot's of dead spider bodies on the floor. It appears to good for garages and sheds and under cupboard spaces. Not sure if it will keep them away, but for now it did what I wanted. I'll update the review in a few weeks to see if any have returned. ### ⭐⭐⭐⭐⭐ Works well *by V***V on 20 July 2026* I have tried many spider repellent and this is the only one I've found to be effective. I can go about 6 weeks between sprays. Keeps spiders away. Product does not have any weird smell and is not offensive for indoor use. ## Frequently Bought Together - Karlsten Spider Killer Repellent Spray High Strength Spider Killer- Lasts 6 Weeks On Surfaces Kills All Types of Spiders Ideal for Indoor and Outdoor Use - 500ml HSE Registered 10668 - Pestshield 3 x Spider & Creepy Crawly Insect Killer Spider Spray No More Spiders 200ml New - Zero In Spider Repellent - Indoor Peppermint Oil Spray for Spiders - Non-Toxic, Insect Spray For Home - Suitable for Indoor Use, Lasts up to 2-3 Weeks - 500ml --- ## 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.us/products/47968534-spider-killer-spray-and-repellent-500ml-indoor-and-outdoor-use](https://www.desertcart.us/products/47968534-spider-killer-spray-and-repellent-500ml-indoor-and-outdoor-use) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-30*