What is an effective control measure for managing cluster flies?

Exclusion efforts are crucial in managing cluster flies effectively, primarily because these pests often enter buildings in large numbers during cooler months seeking warmth. By sealing entry points such as cracks in walls, gaps around windows and doors, and other potential openings, the chances of cluster flies entering a structure significantly decrease. This proactive approach not only prevents infestations from occurring but also minimizes the need for additional control measures, thereby increasing long-term effectiveness.

Utilizing exclusion as a control measure addresses the root of the problem, blocking access to the habitat that cluster flies seek. While trapping, insecticidal dusting, and fogging can be useful in managing existing infestations, they do not prevent the flies from entering the premises in the first place. Without implementing exclusion efforts, you may find yourself in a cycle of ongoing treatment each season when new cluster flies attempt to gain entry.