--- product_id: 57890904 title: "Pest Expert Cluster Fly Killer Smoke Bombs 6 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product)" brand: "pest expert" price: "฿2926" currency: THB in_stock: true reviews_count: 8 category: "Pest Expert" url: https://www.desertcart.co.th/products/57890904-pest-expert-cluster-fly-killer-smoke-bombs-6-x-3 store_origin: TH region: Thailand --- # Fast-acting knockdown on contact Treats rooms up to 6m x 8m Max strength permethrin 13.25% Pest Expert Cluster Fly Killer Smoke Bombs 6 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product) **Brand:** pest expert **Price:** ฿2926 **Availability:** ✅ In Stock ## Summary > 🚀 Blast away cluster flies with pro-grade power and zero mess! ## Quick Answers - **What is this?** Pest Expert Cluster Fly Killer Smoke Bombs 6 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product) by pest expert - **How much does it cost?** ฿2926 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/57890904-pest-expert-cluster-fly-killer-smoke-bombs-6-x-3) ## 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 Smoke Bomb:** Ignite and watch cluster flies vanish instantly—no waiting, no hassle. - • **Residue-Free & Low Odor:** Leaves your home fresh and clean post-treatment—no stains, no smells. - • **Maximum Strength Formula:** Harness the power of 13.25% permethrin for unbeatable cluster fly elimination. - • **Comprehensive Indoor Coverage:** Fumigates entire rooms including hidden corners unreachable by sprays. - • **Professional Grade & HSE Approved:** Trusted by experts for safe, effective pest control in any home or business. ## Overview Pest Expert Cluster Fly Killer Smoke Bombs deliver a professional-strength fumigation solution with 13.25% permethrin, rapidly eradicating cluster flies in rooms up to 6m x 8m. This HSE-approved, low-odor smoke bomb ensures total indoor coverage without staining, making it the go-to choice for effective, hassle-free pest control in homes and businesses. ## Description The Pest Expert Formula 'P' Cluster Fly Smoke Bombs are a fumigation device for eradicating cluster fly infestations in your home or loft and an essential part of any cluster fly treatment. The Formula 'P' Fumer is a cluster fly killing smoke bomb which releases an insecticidal (permethrin) smoke and is ideal for getting rid of cluster flies in lofts, roof spaces or other areas of the home. One smoke bomb will treat a room of approx 6m x 8m (standard ceiling height) and one twinpack should be sufficient to eradicate a cluster fly problem in a standard roof space in a 2-3 bedroom house. To treat a cluster fly infestation in a larger loft area or several rooms add extra Fumers as necessary. Contain Permethrin at 13.25% w/w & Potassium Chlorate at 12.5-15%. Review: It works - It really works on my loft. It kills all the cluster fly in one go. Review: Bye bye fly and other bugs - This year we had an infestation of stink bugs in the motorhome. These things like to overwinter in relatively warm and sheltered places, unfortunately they took a liking to our van. Light these in the van and they all passed away. Remember to stand them on something non-combustible as they get a bit hot as they give off a satisfying plume of smoke. Two were enough for our van. I opened all the internal doors and cupboards and it got all the bugs. ## Features - May cause an allergic skin 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 CLUSTER FLY SMOKE BOMB ON THE MARKET - Containing maximum strength Permethrin, this powerful fumigation device provides rapid knockdown of cluster fly. - ✅ FAST ACTING – Once ignited, this fast-acting smoke bomb kills cluster flies on contact. - ✅ TOTAL INDOOR FUMIGATION SOLUTION – This smoke bomb will fully fumigate even the largest rooms, reaching all the areas you wouldn’t able to with any other products. - ✅ INTEGRAL FOR A COMPREHENSIVE TREATMENT – Formula P Smoke Bombs are integral to any comprehensive cluster fly treatment, killing cluster flies in the airspace. - ✅ NON-STAINING AND LOW-ODOUR – After ventilation there will be no nasty residues or smells on any household furnishing, making it the perfect treatment in any home or business. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01C7CZ7UQ | | Active Ingredients | permethrin | | Active ingredients | permethrin | | Best Sellers Rank | 11,295 in Garden ( See Top 100 in Garden ) 129 in Fly Control | | Brand | Pest Expert | | Brand Name | Pest Expert | | Customer Reviews | 4.1 out of 5 stars 443 Reviews | | Item Form | Powder | | Item Weight | 3.5 Grams | | Item form | Powder | | Item weight | 3.5 Grams | | Manufacturer | Pest Expert | | Specification Met | USDA | | Specification met | USDA | | Target Species | Flies | | Target species | Flies | ## Product Details - **Active ingredients:** permethrin - **Brand:** Pest Expert - **Item form:** Powder - **Item weight:** 3.5 Grams - **Specification met:** USDA ## Images ![Pest Expert Cluster Fly Killer Smoke Bombs 6 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product) - Image 1](https://m.media-amazon.com/images/I/718uZ3SuoiL.jpg) ## Questions & Answers **Q: Do you deliver to France** A: Unfortunately we cannot deliver to France at this time. **Q: Will it kill drain flies** A: Yes, provided that the flies are currently in the room you are treating when you sent the smoke bombs going. **Q: Is anyone use it in flat do you know how to start ?** A: Magdalena. This product can be used in a dwelling, however the property will need to be closed/sealed up for at least 8 hours. You will then need to open all windows and doors for at least an hour before you go back inside. I would recommend using latex gloves and a surgical face mask. **Q: Will these kill wasps which have escaped from the nest under the floor into the lounge?** A: Won’t heaven kill mites that’s what I got for ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works *by V***N on 4 December 2025* It really works on my loft. It kills all the cluster fly in one go. ### ⭐⭐⭐⭐ Bye bye fly and other bugs *by E***R on 10 March 2024* This year we had an infestation of stink bugs in the motorhome. These things like to overwinter in relatively warm and sheltered places, unfortunately they took a liking to our van. Light these in the van and they all passed away. Remember to stand them on something non-combustible as they get a bit hot as they give off a satisfying plume of smoke. Two were enough for our van. I opened all the internal doors and cupboards and it got all the bugs. ### ⭐⭐⭐⭐⭐ Very effective treatment *by J***Y on 11 December 2023* Like many house holds, I suffer the occasional infestation of cluster flies within my loft/attic. It isn't a huge issue as this product is very effective and dispatching the flies and other creepy crawlies. Lighting the fuse is very simple and it ignites well. The smoke emitted isn't the most pleasant of odours so I would recommend using a face covering for protection. Once the smoke bomb is lit, it has an almost immediate effect on the flies and acts very quickly and efficiently. It is prudent to remember that some heat is generated from the product so I find holding with some pliers worms very well. 2 treatments in a large loft area was very effective for me. ## Frequently Bought Together - Pest Expert Cluster Fly Killer Smoke Bombs 6 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product) - Super Fumer Cluster Fly Killer Smoke Bomb 6 x 11g - Formula 'P' Cluster Fly Fumigator from Pest Expert (HSE approved and tested – professional strength product) --- ## 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.co.th/products/57890904-pest-expert-cluster-fly-killer-smoke-bombs-6-x-3](https://www.desertcart.co.th/products/57890904-pest-expert-cluster-fly-killer-smoke-bombs-6-x-3) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-22*