--- product_id: 48081113 title: "Formula ‘P’ Silverfish Killer Powder XL 300g pack size (HSE approved and tested - professional strength product)" brand: "pest expert" price: "€ 30.34" currency: EUR in_stock: true reviews_count: 8 category: "Pest Expert" url: https://www.desertcart.sk/products/48081113-formula-p-silverfish-killer-powder-xl-300g-pack-size-hse store_origin: SK region: Slovakia --- # Max strength Permethrin 25/75 300g XL pack for extended coverage Kills silverfish & eggs on contact Formula ‘P’ Silverfish Killer Powder XL 300g pack size (HSE approved and tested - professional strength product) **Brand:** pest expert **Price:** € 30.34 **Availability:** ✅ In Stock ## Summary > ⚡ Dominate your silverfish problem with the strongest powder on the market! ## Quick Answers - **What is this?** Formula ‘P’ Silverfish Killer Powder XL 300g pack size (HSE approved and tested - professional strength product) by pest expert - **How much does it cost?** € 30.34 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/48081113-formula-p-silverfish-killer-powder-xl-300g-pack-size-hse) ## Best For - pest expert enthusiasts ## Why This Product - Trusted pest expert brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Action:** Eliminates silverfish at all life stages instantly—no waiting, no second chances. - • **User-Friendly Design:** Easy-to-use puffer pack targets hard-to-reach corners and crevices effortlessly. - • **Versatile Application:** Safe for use indoors and around sensitive areas like electrical wiring and woodwork. - • **Cost-Effective XL Size:** Double the powder, double the protection—outlast infestations without breaking the bank. - • **Maximum Strength Formula:** Harness the power of professional-grade Permethrin for unbeatable silverfish control. ## Overview Pest Expert Formula ‘P’ Silverfish Killer Powder is a professional-strength, HSE-approved insecticide containing 25/75 Permethrin. This 300g XL pack delivers fast-acting, long-lasting control by killing silverfish at all life stages, including eggs. Designed for indoor and outdoor use, it’s ideal for hard-to-reach areas like electrical points and woodwork, providing up to 12 weeks of protection. Trusted by thousands, it’s the ultimate solution for persistent silverfish infestations. ## Description Pest Expert Formula 'P' Silverfish Powder is a highly effective Silverfish killer suitable for Silverfish control in hard to reach areas and around electrical cabling. As silverfish are mainly active at night time, the best measures are prevention not only cure, Formula P contains the active permethrin, a broad spectrum insecticide, which will maintain its killing power for up to 12 weeks, ensuring that night or day your silverfish infestation will be in rapid decline. Formula P is a contact insecticide targeting all stages of the life cycle for various insect pests. As silverfish feed not only on food debris but also on starches and gums used to bind books and wood, they can often be found in homes, particularly in areas where using a water based spray would not be suitable such as around electrical cabling, electrical equipment and freshly laid woodwork. Review: Seems effective - We did have an issue with silverfish turning up in several rooms: sticky moth traps placed on the floor caught them in large quantities. I then thought to give this power a try. While we were on holidays, I distributed the powder in corners and near walls. On return, we removed the powder again. I didn't see any dead silverfish lying around. However, the moth traps now are free of them and I have not yet seen any at night again, so I feel they improved the situation a lot. Review: It works very well - I bought this to kill silver fish. Nothing else worked, the pesticide sprays were absolutely useless, but because the powder remains on the surface it means that the bugs are constantly being killed by it. The only problem is it's so powerful that it kills all insects that come into contact with it, now I keep finding dead spiders and the odd wood louse! Terrible way to kill a living thing but at the end of the day, when the critters won't leave your home, there's sadly no other option. 10/10 for effectiveness and value for money. ## Features - Contains PERMETHRIN TECHNICAL 25/75 (52645-53-1). May produce an allergic reaction. - 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. - ✅ THE STRONGEST SILVERFISH POWDER ON THE MARKET – Containing maximum strength Permethrin, this highly effective silverfish powder kills all stages of the silverfish lifecycle. - ✅ FAST ACTING – Formula P is a fasting acting silverfish powder that kills the silverfish life cycle on contact – even eggs! - ✅ PERFECT FOR USE IN THE HOME - This highly effective silverfish powder can be applied to any surface indoors or externally to eradicate silverfish infestations. - ✅ EASY-TO-USE – Supplied in an easy-to-use puffer pack, Formula P is ideal to use around power points and other hard to reach areas. - ✅ INCREASED COVERAGE – Pest Expert Formula P Powder contains 300g of maximum strength powder, which is twice the size of many competitors, making it the most cost-effective silverfish powder on the market. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B013EIB87I | | Best Sellers Rank | 22,017 in Garden ( See Top 100 in Garden ) 338 in Indoor Multi-Insect Control | | Brand | Pest Expert | | Brand Name | Pest Expert | | Customer Reviews | 4.2 out of 5 stars 331 Reviews | | Item Form | Powder | | Item Weight | 300 Grams | | Item form | Powder | | Item weight | 300 Grams | | Manufacturer | Pest Expert | | Specification Met | USDA | | Specification met | USDA | | Target Species | Insects | | Target species | Insects | ## Product Details - **Brand:** Pest Expert - **Item form:** Powder - **Item weight:** 300 Grams - **Specification met:** USDA - **Target species:** Insects ## Images ![Formula ‘P’ Silverfish Killer Powder XL 300g pack size (HSE approved and tested - professional strength product) - Image 1](https://m.media-amazon.com/images/I/41UojbFYskL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seems effective *by "***" on 11 August 2025* We did have an issue with silverfish turning up in several rooms: sticky moth traps placed on the floor caught them in large quantities. I then thought to give this power a try. While we were on holidays, I distributed the powder in corners and near walls. On return, we removed the powder again. I didn't see any dead silverfish lying around. However, the moth traps now are free of them and I have not yet seen any at night again, so I feel they improved the situation a lot. ### ⭐⭐⭐⭐⭐ It works very well *by J***N on 15 September 2022* I bought this to kill silver fish. Nothing else worked, the pesticide sprays were absolutely useless, but because the powder remains on the surface it means that the bugs are constantly being killed by it. The only problem is it's so powerful that it kills all insects that come into contact with it, now I keep finding dead spiders and the odd wood louse! Terrible way to kill a living thing but at the end of the day, when the critters won't leave your home, there's sadly no other option. 10/10 for effectiveness and value for money. ### ⭐⭐⭐⭐ Lots of dusting around but still powerful so far *by B***R on 11 January 2022* This product has only one hole and you have to shake it a lot for this powder. I have powder on my skirting board and below it. I have used it start of December in the bathroom and store cupboard. Have seen only a few silverfish in the beginning and also I had to reapply once in the bathroom because of the moist condition as I have seen two silverfish. I am pleased that I am not seeing any silverfish so far but I would prefer to buy the spray instead next time. ## Frequently Bought Together - Pest Expert Formula ‘P’ Silverfish Killer Powder XL 300g pack size (HSE approved and tested - professional strength product) - RugRemedyUK Silverfish Killer spray - 500ml Instant, long lasting, non staining, odourless Silverfish treatment and repellant for the home - Karlsten Silverfish Killer Spray Fast Effective Quality Silverfish Killer 500 ml Non staining --- ## 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.sk/products/48081113-formula-p-silverfish-killer-powder-xl-300g-pack-size-hse](https://www.desertcart.sk/products/48081113-formula-p-silverfish-killer-powder-xl-300g-pack-size-hse) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-18*