Identify and remove or replace damaged, untreated wood
Seal existing holes with wood filler, caulk, or dowels after confirming bees are gone
Paint, stain, or varnish exposed wood surfaces
Keep wood surfaces dry and well maintained
Cover or screen vulnerable wood areas
Use bee traps placed near active nesting areas
Apply a residual insecticide labeled for carpenter bees to holes and entry points
Treat wood early in spring before nesting activity increases
Repeat treatment if new activity appears
Hire a licensed pest control professional for severe infestations