---
product_id: 53276519
title: "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"
brand: "pest expert"
price: "313 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Pest Expert"
url: https://www.desertcart.ro/products/53276519-pest-expert-cluster-fly-killer-spray-treatment-1ltr-formula-c
store_origin: RO
region: Romania
---

# Fast-acting knockdown 50m² coverage per application 12-week residual protection 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

**Brand:** pest expert
**Price:** 313 Lei
**Availability:** ✅ In Stock

## Summary

> 🦟 Zap flies fast, stay fly-free longer!

## Quick Answers

- **What is this?** 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 by pest expert
- **How much does it cost?** 313 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/53276519-pest-expert-cluster-fly-killer-spray-treatment-1ltr-formula-c)

## 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

- • **Broad Surface Safe:** Water-based, low-odour formula that’s non-staining and safe on furniture and window frames.
- • **Maximized Coverage:** Covers a generous 50 square meters per spray, delivering cost-effective pest control.
- • **Triple-Action Power:** Three potent actives including insect growth regulator for unmatched cluster fly eradication.
- • **Fast & Lasting Control:** Instant knockdown with a protective residue that keeps flies away for up to 12 weeks.
- • **Professional Strength, Amateur Friendly:** Powerful enough for pros, simple and safe enough for home use with kids and pets.

## Overview

Pest Expert Formula 'C+' Cluster Fly Killer Spray is a professional-strength, fast-acting, and long-lasting solution designed for both home and business use. Featuring a triple-active formula including an insect growth regulator, it kills cluster flies on contact and disrupts their lifecycle to prevent reinfestation. Its water-based, low-odour, and non-staining formula covers up to 50m² per application and provides up to 12 weeks of residual protection, making it the most effective and user-friendly cluster fly spray available to amateurs.

## 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).

Review: Does the job very well - I rarely write reviews, but for this product I had to. I was having serious problems with fruit flies in my restaurant. I used three cans of Raid at once and they didn’t die, but with this product they all died within minutes. Amazing — highly recommended.
Review: Works very well - Superb product

## Features

- 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 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 – Formula C+ now covers 50 square meters in a single application making it the most cost-effective cluster fly spray on the market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B010E2GZGQ |
| Best Sellers Rank | 4,720 in Garden ( See Top 100 in Garden ) 60 in Fly Control |
| Customer Reviews | 4.4 4.4 out of 5 stars (385) |
| Date First Available | 25 Jun. 2015 |
| Item volume | 1000 Millilitres |
| Manufacturer | Pest Expert |
| Manufacturer reference | SB |
| Package Dimensions | 31.3 x 15.7 x 6 cm; 1.1 kg |
| Part number | SB |

## 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 Treatment 1Ltr - Formula 'C+' Advanced Maximum Strength Fly Spray, Fast-Acting & Long-Lasting Control, Professional Strength Approved for Amateur Use - Image 1](https://m.media-amazon.com/images/I/71FXOmXlBrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job very well
*by L***A on 4 January 2026*

I rarely write reviews, but for this product I had to. I was having serious problems with fruit flies in my restaurant. I used three cans of Raid at once and they didn’t die, but with this product they all died within minutes. Amazing — highly recommended.

### ⭐⭐⭐⭐⭐ Works very well
*by A***N on 19 October 2025*

Superb product

### ⭐⭐⭐⭐ Good product
*by J***L on 16 March 2021*

Very good 👍👏

## Frequently Bought Together

- 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
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- 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 Romania*
*Store origin: RO*
*Last updated: 2026-02-01*