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Cluster Fly Spray & Powder

Long-lasting Cluster Fly Control!

Applying a residual insecticide to alighting surfaces including window frames will help maintain cluster fly control after an initial fumigation treatment. We offer a selection of cluster fly sprays and powders for this purpose.  

Cluster Fly SprayPest Expert Formula ‘C+’ Cluster Fly Spray

A powerful insecticide with a long-lasting residue that kills cluster flies on contact for up to 12 weeks after application, Formula ‘C+’ is low odour and water-based so will not damage anything that wouldn’t be damaged by water. Formula ‘C+’ is approved for amateur use by the UK HSE, so is perfectly safe for use in homes with pets and/or children, although they should be kept out of the room at time of treatment and until surfaces are dry.

 
Each litre of insecticide is effective over an area of approx 20 square metres. The 1-litre container is supplied with a trigger spray with an adjustable nozzle for easy application. If purchasing 5L container, then the spray is best administered using a pressure sprayer to ensure a thorough and even coverage.

Pest Expert Formula ‘P’ Cluster Fly Powder

A permethrin dust that is ideal for treating roof timbers in lofts and also applying to possible points of entry to prevent any further cluster flies from coming into your property.

Formula 'P' has a residual effect which lasts several months to help maintain long-term cluster fly control. 
The powder comes in an easy-to-use puffer pack to allow even distribution of insecticide. 

Formula ‘P’ has the same active ingredient as the Rentokil Insectrol Powder, but with a 300g pack size, contains twice the amount!  

For information on our other products, see Cluster Fly Smoke Bombs , Cluster Fly Foggers and complete Cluster Fly Killer Kits.
Featured Products
Pest Expert Formula 'C+' Cluster Fly Killer Spray 1L (Free Mask & Gloves)

Pest Expert Formula 'C+' Cluster Fly Killer Spray 1L (Free Mask & Gloves)

Pest Expert Formula 'C' is a highly effective cluster fly killer spray with a fast knockdown and a long-lasting residual effect helping maintain cluster fly control. Ideal for the elimination of cluster fly infestations in lofts and other areas. Can also be applied to alighting surfaces including windows and window frames. Supplied with free safety mask and gloves. (ONLY £7.49 WHEN ORDERING MULTIPLES!).
Price: £8.29 excl. VAT
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Pest Expert Formula 'C+' Cluster Fly Killer 5L

Pest Expert Formula 'C+' Cluster Fly Killer 5L

Pest Expert Formula 'C' is a highly effective insecticidal cluster fly killer spray with a fast knockdown and a long-lasting residual effect that helps maintain cluster fly control. Ideal for the treatment of cluster fly infestations in lofts and other areas. Can also be applied to alighting surfaces including windows and window frames. Recommended for use with a Pressure Sprayer. (ONLY £24.95 WHEN ORDERING MULTIPLES).
Price: £29.15 excl. VAT
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Pest Expert Formula 'P' Cluster Fly Killer Powder

Pest Expert Formula 'P' Cluster Fly Killer Powder

Formula ‘P’ Cluster Fly Killer is a powerful permethrin powder specifically developed to have a rapid knockdown effect on cluster fly infestations. Designed for direct application to window frames, roof timbers and any other alighting surfaces, killing cluster flies on contact and for several weeks after application.
Price: £4.15 excl. VAT
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Cluster Fly Treatment Kit (with Foggers)

Cluster Fly Treatment Kit (with Foggers)

Our Cluster Fly Treatment Kits contain a range of cluster fly killer products to enable you to get rid of cluster flies in your home or loft and prevent future cluster fly infestations. This kit is supplied with Pest Expert Formula 'P' Foggers rather than smoke bombs.
Price: £31.65 excl. VAT
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Cluster Fly Treatment Kit (with Smoke Bombs)

Cluster Fly Treatment Kit (with Smoke Bombs)

Our Cluster Fly Treatment Kits contain a range of cluster fly treatment products to enable you to get rid of cluster flies in your home or loft and prevent future cluster fly infestations. This kit is supplied with Pest Expert Formula 'P' Fumer smoke bombs.
Price: £24.15 excl. VAT
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Pest Expert Formula 'P' Cluster Fly Smoke Bombs (Twin Pack)

Pest Expert Formula 'P' Cluster Fly Smoke Bombs (Twin Pack)

Pest Expert Formula 'P' Cluster Fly Smoke Bombs are a highly effective cluster fly killing fumigation device. Perfect for flushing out cluster fly infestations in lofts and roofspaces. For a more comprehensive cluster fly treatment, use together with Formula 'C' Cluster Fly Killer Spray and Formula 'P' Powder or see our cluster fly control kits. (ONLY £2.66 PER SMOKE BOMB WHEN ORDERING MULTIPLE PACKS).
Price: £5.79 excl. VAT
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Pest Expert Formula 'P' Super Fumer Cluster Fly Smoke Bomb

Pest Expert Formula 'P' Super Fumer Cluster Fly Smoke Bomb

The Pest Expert Formula 'P' Super Fumer Cluster Fly Smoke Bomb is more powerful than a standard Smoke Bomb, treating an area 3 times the size and so making it ideal for flushing out cluster fly infestations in larger areas such as lofts and roof spaces. For longer-lasting cluster fly control, the Super Fumer should be used together with Formula 'C' Cluster Fly Killer Spray and Formula 'P' Powder.
Price: £5.79 excl. VAT
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Pest Expert Formula 'P+' Cluster Fly Fogger

Pest Expert Formula 'P+' Cluster Fly Fogger

The Pest Expert Formula 'P' Cluster Fly Fogger is a fumigation device which kills cluster flies fast. The Fogger works in the same way as a traditional smoke bomb but treats a larger area and offers a safer alternative as it requires no naked flame. (ONLY £5.65 EACH WHEN ORDERING MULTIPLES).
Price: £6.25 excl. VAT
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Pest Expert Formula 'P+' Cluster Fly Fogger *NEW XL SIZE!*

Pest Expert Formula 'P+' Cluster Fly Fogger *NEW XL SIZE!*

The new super-size Pest Expert Formula 'P+' Cluster Fly Fogger is ideal for eradicating cluster fly infestations in larger areas such as lofts and open-plan living spaces. With a coverage of more than 300 cubic meters and containing 100% natural pyrethrins, the Power Fogger offers a safe yet highly effective cluster fly treatment. From £8.29 when buying multiples!
Price: £9.15 excl. VAT
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Rentokil Fly Killer Cassette

Rentokil Fly Killer Cassette

This Fly Killer Cassette from Rentokil is a discreet fly deterrent unit that contains the insecticide transfluthrin which kills cluster flies, house flies and other flying insects.
Price: £4.16 excl. VAT
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EN149 Safety Mask

EN149 Safety Mask

This is a top quality safety mask that meets the EN149 European respiratory standards. Offers excellent protection when using insecticides, preventing the inhalation of liquid droplets and dust particles.
Price: £1.65 excl. VAT
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Pressure Sprayer

Pressure Sprayer

This easy-to-use pressure sprayer is designed and manufactured by market leaders Kingfisher enabling an even a thorough application of Pest Expert insecticide. The pressure sprayer allows for a professional standard treatment and is considerably quicker than a hand-held trigger spray providing an accurate and even application.
Price: £9.15 excl. VAT
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