Carpenter Bee Management: Reduce Damage, Keep Pollinators

Carpenter bees drill perfect ½″ holes in decks, siding, and fascia. The hovering males are harmless; females excavate and lay eggs. To reduce next year’s population:

1. Locate all entrance holes.
2. Inject a labeled insecticide dust or aerosol into each tunnel.
3. Seal holes with exterior caulk or wood putty.

Treating tunnels is far more effective than swatting males. Accept some pollination benefit while protecting structures.