They are strictly parasitic on earthworms.
Flies in the attic uk.
House flies have a short lifespan but they can reproduce quickly and in large numbers.
Cluster flies are common in the loft and attic spaces of homes and business premises.
Apply insecticide to the outside of your attic to prevent flies from coming in.
The anomaly is that cluster flies may try to get into one house but may stay clear of a neighbouring house even if it is a pair of semi detached properties.
The females lay their eggs near earthworm burrows and the larvae then feed on the worms.
If you are worried about an infestation of flies in your home it is advised you call the professionals.
These are not the same as the blue bottles that buzz hard against the windows in the warmer weather or the house flies and smaller flies that are active in summer too.
Attic flies which are also known as cluster flies are insects that often migrate into homes in the fall where they hibernate for the cooler fall and winter months.
One of the best tips for getting rid of attic flies is to keep them from entering the house in the first place as trying to eliminate them after they are in hibernation can be difficult.
The warmth generated here means that flies are naturally drawn into these cavities and voids particularly during the months of october and november where they congregate in groups or clusters.
Remember attic flies want to cluster indoors when it starts to get a lot cooler outdoors.
Do this in the summer or early fall at the latest.
Spray as best you can around your roof chimney eves ventilation holes etc.
Cluster flies then re emerge around late winter spring time when they can become a problem again.
Cluster flies seek refuge in cold weather and find their way into attic spaces and similar areas indoors.
The grass flies or cluster flies or attic flies are the genus pollenia in the family polleniidae are completely harmless to human health.