---
product_id: 58283964
title: "Pest Expert Cluster Fly Killer Attic Fly Smoke Bombs 12 x 3.5g - Formula 'P' Cluster Fly Fumers (HSE approved and tested – professional strength product)"
brand: "pest expert"
price: "14670 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Pest Expert"
url: https://www.desertcart.is/products/58283964-pest-expert-cluster-fly-killer-attic-fly-smoke-bombs-12
store_origin: IS
region: Iceland
---

# Fast-acting knockdown on contact Treats up to 48m² per bomb Max strength Permethrin 13.25% Pest Expert Cluster Fly Killer Attic Fly Smoke Bombs 12 x 3.5g - Formula 'P' Cluster Fly Fumers (HSE approved and tested – professional strength product)

**Brand:** pest expert
**Price:** 14670 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Smoke out cluster flies before they invade your space!

## Quick Answers

- **What is this?** Pest Expert Cluster Fly Killer Attic Fly Smoke Bombs 12 x 3.5g - Formula 'P' Cluster Fly Fumers (HSE approved and tested – professional strength product) by pest expert
- **How much does it cost?** 14670 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/58283964-pest-expert-cluster-fly-killer-attic-fly-smoke-bombs-12)

## 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 unpleasant smells.
- • **Maximum Strength Formula:** Harness the power of 13.25% Permethrin for unbeatable cluster fly elimination.
- • **Comprehensive Indoor Coverage:** Effectively fumigates entire rooms up to 6m x 8m, reaching hidden fly hotspots.
- • **Professional Grade & HSE Approved:** Trusted by experts for safe, powerful pest control in homes and businesses.

## Overview

Pest Expert Cluster Fly Killer Smoke Bombs deliver professional-strength fumigation with 13.25% Permethrin, rapidly eradicating cluster flies in large indoor spaces up to 48m² per bomb. This HSE-approved, low-odor formula ensures a thorough, residue-free treatment ideal for homes and businesses seeking fast, effective pest control.

## 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.

Review: Great bug bombs that work - This size of bug bomb is ideal for a garage, bathroom or small greenhouse/shed. We are very happy with the results. We buy larger bug bombs to use the loft, which is a larger space.
Review: Fantastic - Great Kills flies fast. I didn't even know there was a cluster fly, until i found them in my loft, i was horrified. I googled them and couldn't believe id never heard of them. Its the first time in my life Ive come across them, and ive been around a while. Used 4 in one go, and worked immediately, I had a bit of a problem lighting them, as they dont light quickly. Left my loft hatch closed for a few hours and went to check. They were all dead. I have some left as they can return apparently. So I will use again in autumn. Fantastic product. Can't praise enough. Would buy again

## Features

- ✅ 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 | B012D746SE |
| Best Sellers Rank | 80,632 in Garden ( See Top 100 in Garden ) 688 in Fly Control |
| Customer Reviews | 4.4 4.4 out of 5 stars (47) |
| Date First Available | 20 July 2015 |
| Manufacturer | Pest Expert |

## Product Details

- **Active ingredients:** permethrin
- **Brand:** Pest Expert
- **Specification met:** USDA
- **Target species:** Flies

## Images

![Pest Expert Cluster Fly Killer Attic Fly Smoke Bombs 12 x 3.5g - Formula 'P' Cluster Fly Fumers (HSE approved and tested – professional strength product) - Image 1](https://m.media-amazon.com/images/I/81Q0B2hacYL.jpg)

## Questions & Answers

**Q: I have cluster flies in bedrooms but no loft space . Can I use bombs on beams in bedrooms?**
A: I'm not an expert, I havnt used in the bedroom but used them very successfully in 2 large attics. You have to seal the area to be fumigated and once the bombs are lit leave for a minimum of two hours, preferably over night, keeping all people and animals out. Hope this helps.

**Q: Do I have to clear my lift space of suitcases ect before using these ?**
A: No but it is best to clear space around where you put the smoke bombs because there will be lots of dead flies to clear up

**Q: How long are the smoke bombs meant to give off smoke for ? After a few minutes mine stopped giving off smoke . Is this normal or not ?**
A: Hi Peter,Thank you for your question. This is correct, the smoke bombs only take around 1 minute to fully burn. All the best,Pest Control Supermarket

**Q: I have cluster flies in bedrooms but no loft space . Can I use bombs on beams in bedrooms?**
A: I would seek experts advice because of the fumes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great bug bombs that work
*by J***T on 20 October 2025*

This size of bug bomb is ideal for a garage, bathroom or small greenhouse/shed. We are very happy with the results. We buy larger bug bombs to use the loft, which is a larger space.

### ⭐⭐⭐⭐⭐ Fantastic
*by A***H on 6 July 2025*

Great Kills flies fast. I didn't even know there was a cluster fly, until i found them in my loft, i was horrified. I googled them and couldn't believe id never heard of them. Its the first time in my life Ive come across them, and ive been around a while. Used 4 in one go, and worked immediately, I had a bit of a problem lighting them, as they dont light quickly. Left my loft hatch closed for a few hours and went to check. They were all dead. I have some left as they can return apparently. So I will use again in autumn. Fantastic product. Can't praise enough. Would buy again

### ⭐⭐⭐⭐⭐ Work well
*by T***S on 10 August 2024*

Had a lot of problems with cluster flies , thousands of them, upstairs in the garage block. Have tried various solutions without success. Tried two of these and it made a difference, hundreds of dead bodies. After a couple of weeks tried two more, complete success. Thousands of dead bodies and a big clean up operation. Have now bought a bulk pack and will use them again at the first sign of infestation. I sit tham in an old baking tray for safety but don't really need to. GOOD.

## Frequently Bought Together

- Cluster Fly Killer Attic Fly Smoke Bombs 12 x 3.5g - Formula 'P' Cluster Fly Fumers from Pest Expert (HSE approved and tested – professional strength product)
- 2 X Johnson's Veterinary Flea Killer Bomb Room Fogger Multi pack

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-21*