Carpenter Bees
Carpenter bees, and in some regions carpenter wasps, create round holes in firm wood to create cells for laying eggs and for protecting larvae. The bees (3/4”-7/8”) look similar to bumble bees and the holes are a clean circle about ½”-1” (1.5-3.0 cm) in diameter and 4”-6” (10-15 cm) deep into the wood. Some bee cells are reused and lengthened so it is important to treat not only to remove the bees, but also to seal the holes after the removal of the bees. The holes do not generally lessen the structural stability of the wooden member. Bees prefer soft woods and often enter at flat facia boards or posts. Annual inspections are important to look for carpenter bees. To deter nesting, paint or varnish exposed wood, if appropriate for historic appearances, and seal holes as they can be reused.