These nests should simply be removed and discarded. Nests without holes can be removed and crushed or treated with an insecticide. The destruction of nests discourages infestations by dermestid beetles and other insect scavengers which could move to other household items. These large, dark-colored bees are similar in size and appearance to bumble bees. They can be distinguished from bumble bees by their hairless abdomen.
Carpenter bees make their nests in beams, rafters, telephone poles and other wooden structures.
Although extensive tunneling by carpenter bees can cause some damage to timbers, control is rarely necessary. Digger Wasps Digger wasps are beneficial. They appear in the morning and fly-over turf in search of beetle grubs or the larvae of other insects. These wasps generally do not sting unless handled or molested. If control is desired, treat the lawn with a liquid or granular insecticide.