Insects
Cluster Fly
The cluster fly seeks to overwinter inside homes from fall onward. It accumulates in large numbers in attics, walls and window frames, and reappears on mild winter days and in spring.
How to identify
Fly slightly larger and slower than a house fly, with a thorax covered in golden hairs. Moves sluggishly and clusters near sunny windows.
Typical habitat
Attics, roof voids, walls, south- and west-facing window frames. Larvae parasitize earthworms in the soil.
Health risks
The cluster fly doesn't bite, doesn't lay eggs in food and transmits no disease. It's mainly a major nuisance due to its numbers, especially in fall and spring when it invades rooms.
Signs of an infestation
If you notice any of these signs, contact us quickly.
- Clusters of slow flies near sunny windows
- Mass appearance in fall and during winter thaws
- Dead flies accumulated on window sills
- Dark stains in attics and lofts
- Buzzing in walls and window frames
How to prevent
Simple measures to apply to limit infestation risk.
- Seal cracks, soffits and window surrounds before fall
- Install screens and vent grilles
- Apply an exterior preventive treatment in late summer
- Seal attic entry points
- Have recurring accumulation zones inspected
Cluster Fly problem? We respond within 4 hours
Montreal, Laval, South Shore, North Shore. Written guarantee, certified technician, unmarked vehicle.
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Carpenter Ant
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