Cluster flies, also known as attic flies, are household pests and are similar in size to a housefly but are slightly larger and darker and are more sluggish in their movement. As their name suggest, they will often swarm together for warmth throughout the colder months. Homes which have experienced a cluster fly infestation will often suffer a recurrence in subsequent years due to the pheromones which they leave behind, which is attractive to other cluster flies.
Cluster flies are capable of crawling through small openings in the walls of a structure. They hibernate in secluded parts of houses like attics and wall voids. On sunny winter days, the wall voids become warm and the cluster flies try to move toward light. Very often they find themselves in the inhabited parts of the house as they move towards windows.
Our technicians will often use airborne fogging insecticides with a residual effect to eliminate cluster fly infestations. Call us now to arrange a visit.