Cluster fly seek sheltered locations to overwinter as temperatures drop, which often coincides with human habitats. Their presence in homes becomes a nuisance as they cluster around windows and buzz loudly. The trouble lies in their intrusion into personal spaces, which can be mildly irritating or severely bothersome to individuals.

To prevent issues with cluster fly, ensure that your home is well-sealed before the onset of colder weather. Install fine mesh screens on windows and vents, seal cracks and gaps in the structure, and use weather stripping around doors and windows to deter these pests from entering your home in search of warmth.

If affected by cluster fly, routinely check and clear window areas where they commonly cluster. Use a vacuum with a hose attachment to gently remove any individuals without harming them. Ensure proper ventilation in your home to discourage their presence. During their active time inside, avoid leaving windows open without screens and maintain clean surfaces to minimize attraction. Please remember, maintaining personal hygiene and a clean living environment will also contribute to a faster resolution of troubles caused by these insects.

Cluster fly often invade homes for overwintering, causing a mild to severe nuisance. Adults notoriously cluster at windows, buzzing and being bothersome. Their presence reflects their life cycle, seeking warmth and shelter as temperatures drop.