Using the products and methods suggested you will get control of Cluster Flies. Formula 'C+' is a ready-to-use insecticide that is safe for direct application to alighting surfaces including window frames and roof timbers. Cluster Fly Kill and Control Insecticide Spray 1 litre is an effective product to kill and stop a problem with cluster flies and other flying or crawling insects. Fast-acting – kills cluster flies on contact; Long-lasting residual maintains cluster fly control for up to 12 weeks!

Pest Expert Cluster fly Killer Smoke Bombs 4 x 3.5g - Formula 'P' Cluster Fly Fumers from (HSE approved and tested – professional strength product) 4.4 out of 5 stars 124 £14.95

Spray it lightly, as needed, for contact kill. Eliminating Cluster Flies. Apply to window frames, roof timbers and other alighting surfaces.

A contact pyrethrum spray like CB-80, which is approved for indoor use, can help, as well.

Exclusion: Close and seal as many openings as possible through which the flies can enter.

This procedure is time consuming and may require a dedicated long term effort. Cluster flies will hibernate in several areas of the house, which is why they can be hard to eliminate.

For use inside or outside on window frames etc., this cluster fly insecticide is residual and will continue to work for up to … Cluster flies, face flies and blow flies are difficult to control once they have gained access to homes because they hibernate in wall voids and other inaccessible places. Follow this guide and use the recommended products and we guarantee 100% control of Cluster Flies. They are usually found in large numbers in the fall. They tend to hibernate in empty places around the house such as attics, basements and other unused spaces. Cluster Fly Control: How To Get Rid of Cluster Flies. Cluster flies especially love decomposing food and sweets! The Fusion range of fly killers from Insect-a-clear make a good choice for cluster flies owing to their use of double-sided glue boards for maximum capacity. Pest Expert Formula 'C+' Cluster Fly Spray contains cypermethrin (0.1% w/w), which kills cluster flies fast and leaves a long-lasting residue that maintains cluster fly control for up to 12 weeks.

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.


The T35 and T65 Electric Grid Fly Killers are specifically for killing and getting rid of cluster flies as they have the deep cluster fly catch tray [ sold seperately ]. A cluster fly is a black fly that is slightly larger than a regular fly. This page is a general Cluster Fly control guide.