Here’s how to get rid of carpenter bees. Entomolygists recommend applying an insecticidal dust directly into the nest opening. The best way to do this is use a small duster that will puff the dust up into the opening to coat the insides of the tunnels. Entymologists at Penn State recommend the following steps for removing carpenter bees:
- To avoid possible stings, treat the area at night.
- Use a flashlight with red celophane taped over the lense.Carpenter bees can’t see red light, but you should be able to see the openings clearly.
- If you must treat during the daytime, use a pyrethrum spray or wasp and hornet spray to knock down any bees flying about.
- It is advisable to wear protective clothing, gloves, goggles and a respirator or dust mask because the insecticidal dust will frequently become airborne and may drop down onto you as you dust the tunnel. Launder any contaminated clothing immediately (do not mix with other household laundry items) and take a shower to remove and insecticidal dust.
- Do NOT plug the holes immediately! Because the bees need to be be able to enter into the nest to come into contact with the dust and distribute it throughout the tunnel system.
- It is recommended that you treat the nests with the dust once in the spring, when the carpenter bees are first detected, once in the summer, and a final time in early fall.
- In the fall, fill the holes with wood putty
- Because of the obvious risks associated with treating carpenter bee holes in eaves or soffits, many homeowners will contract with a licensed pest control company to provide this service.