Cluster Fly

Cluster flies are slightly larger than house flies, about 1/4 to 1/2 inch long, with a dark gray body covered in golden hairs. When crushed, they emit a characteristic sweetish odor. Unlike house flies, they are sluggish in flight.

Large numbers of slow-moving flies clustering around windows, particularly on sunny sides of buildings, are a key sign. You might also find them hiding in attics, wall voids, and other sheltered areas during the cooler months. Dead cluster flies may accumulate in window sills and light fixtures.

MBPC provides targeted treatments to control cluster fly infestations in the Grand Strand area. Our licensed technicians can apply residual insecticides to exterior surfaces and entry points to prevent flies from entering your home. We also offer interior treatments using specialized fogging equipment, always in compliance with SC Department of Pesticide Regulation standards.

Seal cracks and crevices around windows, doors, and siding to prevent cluster flies from entering your home. Ensure screens are in good repair. Consider installing door sweeps and weather stripping, which are especially important in older Myrtle Beach homes with settling foundations.

Cluster flies are common in rural and suburban areas around Myrtle Beach, where they breed in earthworms. They often seek shelter in buildings during the fall and winter to escape the cold. Coastal homes near open fields or wooded areas are particularly susceptible to infestations.

Peak activity: Fall-Winter