re: Carpenter bees

Puff Demon Dust in the holes and Viper on the wood. Wait a week puff the Demon Dust in the holes again and close the holes with 1/2" MyMicco termite hole plugs. Hit the wood with Viper every couple of weeks while the infestation is still active. Once they are gone just spray every 4-6 months.

Waiting a week to plug the holes after the first application of dust is important otherwise the dying bees will desperately chew there way out and leave another hole.