10/11/2026
The calendar for fall pest work is short and specific. Exterior exclusion should happen from late August through the end of September for most of the Rochester and Canandaigua area, with Syracuse about a week behind. Miss that window and the season turns into a management problem, with the real fix pushed to next fall. Exclusion is mostly carpentry and sealant, worked from the top down, and it is the only approach that changes the outcome permanently. You can reasonably handle the caulking, screen repair, and door sweeps yourself. Roofline work at height, and an accurate read on where insects are actually entering, is where a professional earns it, because guessing at the entry point is why a weekend of sealing often produces no change at all. One more thing: in New York, pest control for hire requires state licensing, so skip the DIY foundation spray. Sealing gaps gets you a better result from the same effort. Full timing guide here.
Cluster flies, stink bugs, lady beetles and spiders move indoors every fall. Optimum Pest Pros explains how to identify and block overwintering pests.