Mar 7, 2022 · Big black flies, commonly known as cluster flies, can be cause for concern if they are buzzing around inside your house. While this large fly species is more of a nuisance than a legitimate threat, cluster flies are unpleasant, and the only effective removal remedy is to either trap or kill them.

Jul 19, 2024 · The sudden appearance of big flies on house walls or windowsills, especially in winter, is likely cluster flies. These oversized swarming black flies are not ordinary house flies. Cluster flies overwinter in the warmth between the inside and outside walls of your home, the attic, or the basement.

Adult houseflies are usually 6 to 7 mm (1⁄4 to 9⁄32 in) long with a wingspan of 13 to 15 mm (1⁄2 to 19⁄32 in). The females tend to be larger winged than males, while males have relatively longer legs. Females tend to vary more in size [2] and there is geographic variation with larger individuals in higher latitudes. [3] .

Divided into two groups by size, these types of house flies frequently invade homes. Adult house flies are ash gray to black in color. The pests search for food waste or pet feces as sites to lay their eggs. They infest trashcans, sewers, and carrion.

Large, black, slow-moving flies in the home may be cluster flies or house flies. Make sure your home is fly-free with help from Orkin.

3 days ago · Cluster flies are common pests that invade homes, particularly when temperatures start to drop. They gain entry through small openings, cracks, and crevices. This is to seek shelter from wind and frost during the winter. What are cluster flies? Where do cluster flies live? How to get rid of cluster flies?

If you're suddenly noticing large flies inside your home, it's more than just an inconvenience—it could be a health risk. Flies can contaminate food and surfaces, and understanding what attracts them can help prevent future infestations. This guide breaks down why flies invade homes and how you can tackle the problem.

Jan 22, 2025 · House flies—musca domestica—are an insect in the family Muscidae and order Diptera. They have gray or black bodies, large red eyes, and two nearly translucent wings. Their bodies are around 0.2 to 0.3 inches long. House flies have slightly hairy bodies, and females are larger than males.

The large, black, pesky flies that show up in bedrooms and on window sills from late fall through early spring are common household pests. These flies are known as cluster flies, a name that describes their habit of clustering in large numbers inside attics.

Mar 13, 2024 · Large flies go by many names: Filth flies, houseflies, bottle/blow flies and flesh flies. These flies are drawn to food and can transmit at least 65 diseases to humans, making them particularly threatening for restaurants and food retail.