---
product_id: 63075595
title: "Pest Expert Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use)"
brand: "pest expert"
price: "AED 215"
currency: AED
in_stock: true
category: "Pest Expert"
url: https://www.desertcart.ae/products/63075595-pest-expert-cluster-fly-killer-spray-2-x-1ltr-formula
store_origin: AE
region: United Arab Emirates
---

# Fast-acting knockdown Water-based & low-odour 12-week residual protection Pest Expert Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use)

**Brand:** pest expert
**Price:** AED 215
**Availability:** ✅ In Stock

## Summary

> 🚫🐝 Say goodbye to cluster flies — fast, fierce, and long-lasting!

## Quick Answers

- **What is this?** Pest Expert Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use) by pest expert
- **How much does it cost?** AED 215 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/63075595-pest-expert-cluster-fly-killer-spray-2-x-1ltr-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

- • **Extended Defense:** Protects treated areas for up to 12 weeks with lasting residue
- • **Safe & Clean Use:** Non-staining, water-based formula with minimal odour for home-friendly application
- • **Lifecycle Disruptor:** Insect Growth Regulator stops new flies before they hatch
- • **Triple-Action Power:** Three potent actives for unbeatable cluster fly elimination
- • **Max Coverage Efficiency:** 2L pack covers 100m², delivering professional strength at amateur ease

## Overview

Pest Expert Formula 'C+' Cluster Fly Killer Spray is a UK Government HSE approved, professional-strength solution designed for amateur use. Featuring a triple active ingredient formula including an insect growth regulator and natural pyrethrum extract, it delivers rapid knockdown and prevents fly reproduction. This water-based, low-odour spray covers up to 100 square meters per 2L pack and provides up to 12 weeks of residual protection, making it the most effective and user-friendly cluster fly control on the market.

## Description

Pest Expert Formula 'C+' Cluster Fly Spray is a fast-acting cluster fly killer with a long-lasting residual that helps maintain cluster fly control. Our latest innovative formulation incorporates two additional active ingredients. The first is pyriproxyfen, a ground-breaking insect growth regulator that halts the progression of the lifecycle development from juvenile to adult, resulting in the inability for the fly to reproduce. The second is the addition of chrysanthemum cinerariaefolium extract, a natural pyrethrum, which when combined with cypermethrin (0.1%) has a synergistic effect, helping to deliver an even faster knockdown and longer-lasting residual for ongoing control of all lifecycle stages. Pest Expert Formula 'C+' is the most powerful cluster fly killer spray available to the amateur market, offering both fast-acting and long-lasting cluster fly control to help you eradicate a cluster fly infestation in your home, loft or roof space. Formula 'C+' Cluster Fly Spray should be applied to any alighting surfaces including window frames and roof timbers. Formula 'C+' is water-based and low-odour, making it perfectly suitable for use in homes with children and/or pets, provided they are kept out of the area being treated until all surfaces are dry (2-3 hours).

## Features

- ✅ THE STRONGEST CLUSTER FLY SPRAY ON THE MARKET – Our latest innovative formulation contains three powerful active ingredients making it unparalleled in its ability to eradicate cluster fly infestations from the home or business.
- ✅ NEWLY DEVELOPED FORMULATION – Now containing three powerful active ingredients, including an Insect Growth Regulator, Formula C+ kills cluster flies on contact and halts the progression of the cluster fly lifecycle development, resulting in no new numbers.
- ✅ FAST ACTING AND LONG LASTING – The three potent active ingredients work in a synergistic way helping to deliver an even faster and more widespread knockdown of cluster fly and leaves an insecticidal residue that continues to protect for up to 12 weeks.
- ✅ NON-STAINING AND LOW-ODOUR – Formula C+ is a ready-to-use, water-based spray so can be applied directly to any surface and furniture without causing any damage or nasty lingering smells.
- ✅ INCREASED COVERAGE – 2 x Formula C+ now covers 100 square meters in a single application making it the most cost-effective cluster fly spray on the market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B012D9M39Q |
| Best Sellers Rank | 8,404 in Garden ( See Top 100 in Garden ) 198 in Fly Control |
| Brand Name | Pest Expert |
| Customer Reviews | 4.3 4.3 out of 5 stars (372) |
| Item Form | Spray |
| Liquid Volume | 1000 Millilitres |
| Manufacturer | Pest Expert |
| Specification Met | USDA |
| Target Species | Insect,Flies |

## Product Details

- **Brand:** Pest Expert
- **Item form:** Spray
- **Liquid volume:** 1000 Millilitres
- **Specification met:** USDA
- **Target species:** Insect,Flies

## Images

![Pest Expert Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use) - Image 1](https://m.media-amazon.com/images/I/71lQiFZ1g6L.jpg)

## Questions & Answers

**Q: Would this be ok to use if you have dogs?**
A: Hi, yes providing the dogs are kept out of the room you're treating until the spray has fully dried (roughly 1 hour).

**Q: Can you use on house plant soil?**
A: I wouldn’t - you have to wear a mask to spray it and then leave the room for a couple hours
So that can’t be good for soil

**Q: Can it be used indoor?**
A: I normally use it around the window frames outside just on the edge so bordering the inside frame but please follow instructions and wear the mask (although we are all wearing them these days ) it leaves a bit of a fly killer smell but it soon goes and it’s worked for me !! 
I never saw a cluster fly at all last year probably get two or three applications out of it depending on how many Windows and doors you have but it’s good stuff !! 
Happy spraying 😹

**Q: Can this be used for regular house flies?**
A: I wouldn’t be spraying freely around house. It is strong and should be left for hour before reentering room. I have only used it around window frames where cluster flies gather.

## Frequently Bought Together

- Pest Expert Cluster Fly Killer Spray 2 x 1Ltr - Formula 'C+' Advanced Cluster Fly Spray (UK Government HSE approved and tested – professional strength for amateur use)
- 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 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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**Shop now:** [https://www.desertcart.ae/products/63075595-pest-expert-cluster-fly-killer-spray-2-x-1ltr-formula](https://www.desertcart.ae/products/63075595-pest-expert-cluster-fly-killer-spray-2-x-1ltr-formula)

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*Product available on Desertcart United Arab Emirates*
*Store origin: AE*
*Last updated: 2026-10-07*