29 November 2017

Pest advice for controlling Cluster Flies

These are dark greyish flies about 8mm long with yellowish hairs on the back and with overlapping wings. In autumn they congregate in large numbers in upper rooms or roof spaces of houses to hibernate. They will then reemerge in Spring to seek out egg laying sites outside. A mass of cluster flies has a characteristic smell. They are sluggish in flight and are a nuisance in the house. The larvae of one species are parasitic upon certain earthworms, so this species is more common in rural areas.

Cluster fly-1Remedy

Cluster flies can often most easily be removed with a vacuum cleaner. Aerosol fly killers deal with smaller numbers. Pest control contractors may use insecticidal fogs or smoke generators to clear heavy infestations. Cluster flies may return to the same location year after year.

See also Yellow Swarming Fly

Having problems with Cluster Flies?

Use a trained professional pest controller.

Search for your local BPCA member

Source: A-Z

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