Cluster Fly

Cluster fly is now a very common problem. There are about four or five types of cluster fly that regularly infest homes and offices. The main cluster fly is in fact a parasite of the earthworm and will spend the whole of the summer outside laying its eggs all over the land around you. This is why you very rarely get them in large towns and cities as there is not enough grass.

In the autumn they start to move into buildings to hibernate for the winter. They will generally infest the loft spaces and top floors, getting into every tiny crack and crevice they can, to seek shelter from the frost of winter. They cluster together in sometimes huge groups, hence the name. They will normally be found on the south side of the building or areas that get the most sun. Treatment is fairly simple as long as there is good access to the areas infested.

For example a loft space would be very easy to treat; a loft space that had been converted would be more difficult. There is no effective control you can carry out yourselves as one tin of fly spray is not going to fill your loft space with enough insecticide to kill all the flies. However, the treatment for cluster fly is not normally expensive. In most cases it would cost you more in cans of fly spray than it would to call me out.