Cluster Files

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. 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.

How we can help
  • We treat all rooms and lofts by fogging which have flies in.
  • The treatment is not elimination for an ongoing period. The treatment will only deal with the cluster flies in the loft at that moment in time, it has no lasting effect.
During our visit to deal with Cluster flies

You should be out of the property during our treatment for up to 2 hours.

After our visit to deal with Cluster flies
  • If after 7 days there is still activity then a second treatment may be required.

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Memberships & Affiliations

british pest control associationbritish pest control associationbritish pest control association