Plug newly excavated nests with doweling to discourage further activity and to protect the wood from deterioration. Wait 12 to 24 hours after application, then plug the hole. New adult carpenter bees will continue to emerge from completed nests if insecticides are not used before plugging. By waiting a short time before plugging the nest entrance after application bees returning to the nest and those attracted to the wood will be eliminated. Take precautions to avoid being stung while treating carpenter bees.
Females are very aggressive, particularly during nesting activity.
Insecticide label clearances are subject to changes and changes may have occurred since this publication was printed. The pesticide USER is always responsible for the effects of pesticides on his own plants or household goods as well as problems caused by drift from his property to other property or plants. Always read and follow carefully the instructions on the container label. The information given herein is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Cooperative Extension Service is implied.