---
product_id: 62339933
title: "Karlsten Ant Killer Spray | Extra-Strong Cypermethrin | Fast-Acting Red & Black Ant Killer | Indoor & Outdoor Insect Control | Long-Lasting Protection | 500ml"
brand: "karlsten"
price: "€ 44.01"
currency: EUR
in_stock: true
reviews_count: 8
category: "Karlsten"
url: https://www.desertcart.nl/products/62339933-karlsten-ant-killer-spray-extra-strong-cypermethrin-fast-acting-red
store_origin: NL
region: Netherlands
---

# Fast-acting Cypermethrin Indoor & outdoor versatile use 6 weeks residual protection Karlsten Ant Killer Spray | Extra-Strong Cypermethrin | Fast-Acting Red & Black Ant Killer | Indoor & Outdoor Insect Control | Long-Lasting Protection | 500ml

**Brand:** karlsten
**Price:** € 44.01
**Availability:** ✅ In Stock

## Summary

> ⚡ Stop ants in their tracks with pro-level power!

## Quick Answers

- **What is this?** Karlsten Ant Killer Spray | Extra-Strong Cypermethrin | Fast-Acting Red & Black Ant Killer | Indoor & Outdoor Insect Control | Long-Lasting Protection | 500ml by karlsten
- **How much does it cost?** € 44.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/62339933-karlsten-ant-killer-spray-extra-strong-cypermethrin-fast-acting-red)

## 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

- • **Long-Lasting Defense:** Creates a protective barrier that repels ants for up to 6 weeks indoors and outdoors.
- • **Precision Spray Control:** Easy-to-use aerosol with a targeted nozzle for mess-free application in cracks and crevices.
- • **Instant Ant Annihilation:** Kills red & black ants on contact, stopping infestations before they spread.
- • **Professional-Grade Formula:** Trusted by homeowners and pest pros for fast, reliable ant control.
- • **Versatile Home & Garden Shield:** Effective against multiple ant species across kitchens, patios, garages, and commercial spaces.

## Overview

Karlsten Ant Killer Spray harnesses the power of extra-strong Cypermethrin to deliver instant ant elimination and up to 6 weeks of residual protection. Designed for both indoor and outdoor use, its precision nozzle ensures targeted, mess-free application. Trusted by professionals and homeowners alike, this 500ml spray tackles red and black ants effectively across multiple environments, providing a long-lasting barrier that prevents reinfestations.

## Description

Great prices on your favourite Gardening brands, and free delivery on eligible orders.

Review: Kills all known spiders dead on their feet, or in their their webs - Spider Spray, Spider Spray, does whatever the bottle says, Can it kill, spiders dead. yes it can because its a spray (homage to the Simpsons). Kills small ones dead almost immediately, bigger ones take a few sprays, but if you squirt it in the air vents 50 or so will bungay jump out, so make sure you step well back if you have a phobia (which is probably why you brought the spray in the first place. Moving to a house in the country was a big shock, especially when machete weilding spiders run at you. The spray is always on my belt like a spidey John Wayne. Have just brought again.
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.
- ✔ Kills Ants Instantly & Stops Infestations Fast – Formulated with high-strength Cypermethrin, this ant spray eliminates red and black ants on contact, stopping trails and nests before they spread.
- ✔ Long-Lasting Residual Barrier – Unlike standard ant sprays, Karlsten’s advanced pest control formula provides up to 6 weeks of protection, repelling ants and preventing reinfestations indoors and outdoors.
- ✔ Indoor & Outdoor Use – Versatile Home Protection – Ideal for kitchens, floors, doorways, patios, gardens, garages, and commercial spaces. Works on carpenter ants, fire ants, sugar ants, and more.
- ✔ Easy-to-Use Spray with Precision Nozzle – The ready-to-use aerosol spray ensures targeted application for cracks, crevices, and entry points—no messy residue, no complicated setup.
- ✔ Trusted Professional-Grade Formula – Karlsten delivers fast, effective, and reliable ant control, used by homeowners and professionals alike to eliminate and prevent ant infestations with ease.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B073G3YPXP |
| Best Sellers Rank | 1,831 in Garden ( See Top 100 in Garden ) 14 in Ant Control |
| Customer Reviews | 4.1 4.1 out of 5 stars (4,951) |
| Date First Available | 28 Jun. 2017 |
| Item display height | 15 centimetres |
| Item display length | 15 centimetres |
| Item display weight | 0.02 Kilograms |
| Item display width | 15 centimetres |
| Item model number | 2017 |
| Item volume | 500 Millilitres |
| Manufacturer | lodi uk |
| Material type | Plastic |
| Part number | 2017 |
| Product Dimensions | 15 x 15 x 15 cm; 20 g |

## Product Details

- **Active ingredients:** Cypermethrin
- **Brand:** Karlsten
- **Item form:** Spray
- **Item weight:** 0.02 Kilograms
- **Specification met:** HSE 10668

## Images

![Karlsten Ant Killer Spray | Extra-Strong Cypermethrin | Fast-Acting Red & Black Ant Killer | Indoor & Outdoor Insect Control | Long-Lasting Protection | 500ml - Image 1](https://m.media-amazon.com/images/I/51nOXpxqrlL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Kills all known spiders dead on their feet, or in their their webs
*by M***E on 10 October 2025*

Spider Spray, Spider Spray, does whatever the bottle says, Can it kill, spiders dead. yes it can because its a spray (homage to the Simpsons). Kills small ones dead almost immediately, bigger ones take a few sprays, but if you squirt it in the air vents 50 or so will bungay jump out, so make sure you step well back if you have a phobia (which is probably why you brought the spray in the first place. Moving to a house in the country was a big shock, especially when machete weilding spiders run at you. The spray is always on my belt like a spidey John Wayne. Have just brought again.

### ⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Improve your quality of life and enjoy open windows
*by H***H on 9 June 2023*

After having 3 spider infestations in our old place, resulting in £100s spent to kill them I always make sure I have minimum 1 of these bad boys at home. I spray every door, window, entry point of the house roughly every 6 weeks and we are 88% spider free. If one escapes in it’s easy to spray and it dies in seconds. This morning the universe tested my very real fear of spiders by sending a beast. This was the thickest and nastiest spider I’ve seen in the U.K. - I ended up pouring the solution over it as I wasn’t sure if it’ll take and the video speaks for it self. It doesn’t smell like anything, I do have a dog so just make sure you read the safety manual. I’m on my 6th bottle tbh. This is a staple in my house and will always be. The only negative is that my last bottle broke the nozzle but it’s not the end of the world

## Frequently Bought Together

- Karlsten Ant Killer Spray | Extra-Strong Cypermethrin | Fast-Acting Red & Black Ant Killer | Indoor & Outdoor Insect Control | Long-Lasting Protection | 500ml
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-29*