---
product_id: 48628711
title: "Cluster Fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product)"
brand: "pest expert"
price: "169 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "Pest Expert"
url: https://www.desertcart.pl/products/48628711-cluster-fly-killer-smoke-bombs-4-x-3-5g-formula
store_origin: PL
region: Poland
---

# Fast-acting knockdown on contact Treats rooms up to 48m² Max strength Permethrin 13.25% Cluster Fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product)

**Brand:** pest expert
**Price:** 169 zł
**Availability:** ✅ In Stock

## Summary

> 🚀 Blast away cluster flies with the strongest smoke bomb on the market!

## Quick Answers

- **What is this?** Cluster Fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product) by pest expert
- **How much does it cost?** 169 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/48628711-cluster-fly-killer-smoke-bombs-4-x-3-5g-formula)

## 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 lingering smells.
- • **Maximum Strength Formula:** Harness the power of 13.25% Permethrin for unbeatable cluster fly elimination.
- • **Comprehensive Indoor Coverage:** Fumigates entire rooms including hard-to-reach spaces for total infestation control.
- • **Professional Grade & HSE Approved:** Trusted by experts, safe when used as directed, and essential for serious fly control.

## Overview

Pest Expert Cluster Fly Killer Smoke Bombs deliver a professional-strength, fast-acting fumigation solution using 13.25% Permethrin. Designed to treat rooms up to 48m², these HSE-approved smoke bombs eradicate cluster flies on contact without leaving stains or odors, making them ideal for comprehensive indoor pest control in homes and businesses.

## Description

The Pest Expert Formula 'P' Fumer 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 twin-pack 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: Cluster flies - Seemed to have done the job No more cluster flies in attic
Review: Kills the little blighters - Excellent product. Does a good job

## 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.
- ✅ 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 | B012D6YZM2 |
| Best Sellers Rank | 1,345 in Garden ( See Top 100 in Garden ) 17 in Fly Control |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,464) |
| Date First Available | 20 July 2015 |
| Manufacturer | Pest Expert |
| Package Dimensions | 12.1 x 6.8 x 3.1 cm; 50 g |

## Product Details

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

## Images

![Cluster Fly Killer Smoke Bombs 4 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/71hHfLYHuZL.jpg)

## Questions & Answers

**Q: Will these only work for cluster flies, or can they be used to deal with other creepy crawlies and flying insects?**
A: I used it in my loft many times it kills most things present at the time

**Q: Can this be placed on a wood surface? I have had a recent spout of black files in my shed but it has flammable materials.**
A: No problem but I would suggest placing the bomb on a saucer just in case!!
They work incredibly well.

**Q: Can this be used in a crawlspace under kitchen, would be sitting about 25cm beneath floorboards.**
A: Think it would be ok, as long as you put it on something that won’t burn, as it starts off hot (as you have to light the wick).  I used it successfully in a small area by taping it to a pole so I could get it into the ‘crawl space - worked really well, left it to fume for a few hours, all good.

**Q: How do you use these, i have drain flies. How can i kill them**
A: you light them like a small candle/firework and after a small amount of burning they  release the smoke that kills things ,you could float them on a small foil pie tray or something like that .They work best where the area is sealed though (room with door closed etc )

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cluster flies
*by J***S on 26 January 2026*

Seemed to have done the job No more cluster flies in attic

### ⭐⭐⭐⭐⭐ Kills the little blighters
*by C***E on 21 November 2025*

Excellent product. Does a good job

### ⭐⭐⭐⭐ Mostly good
*by R***E on 28 November 2025*

One was faulty but when they do work, they work!

## Frequently Bought Together

- Pest Expert Cluster Fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Fumer Cluster Fly Bomb (HSE approved and tested – professional strength product)
- Pest Expert Cluster Fly Killer Spray Treatment 1Ltr - Formula 'C+' Advanced Maximum Strength Fly Spray, Fast-Acting & Long-Lasting Control, Professional Strength Approved for Amateur Use
- Pest Expert Formula ‘P+’ Cluster Fly Killer Fogger Treatment 4 x 150ml – Maximum Strength Fly Bombs for Fast-Acting Effective Control, Professional Strength for Approved Amateur Use

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-06*