Purchase an insecticidal dust containing 5 percent carbaryl content. This type of insecticide is often used by pest control professionals as it is very effective at killing wood bees.
Put on work gloves, goggles and a respirator to protect you from the insecticide. Chemicals in insecticides are harmful when inhaled.
Inject the long sprayer snout on the insecticide deep into the hole in the wood. Treat the hole with the insecticide, according to the manufacturer's instructions.
Leave the treated wood alone for a week, to allow the female bee time to distribute the insecticide dust within the tunnel. Insert a small cork into the opening of the hole.
Use wood glue to glue the cork into the hole, once you have achieved a snug fit. Paint the wood surface with two coats of exterior primer, using a paintbrush. Allow each coat of primer to thoroughly dry, according to the manufacturer's directions.
Paint over the dried primer with two coats of finish paint, using the paintbrush. Allow each coat of paint to thoroughly dry, according to the manufacturer's directions.
Things You Will Need
- Insecticidal dust
- Work gloves
- Small cork
- Wood glue
- Exterior primer
- Finish paint
- Use all-purpose lubricating oil instead of insecticidal dust.
- Use pieces of wood dowel rod instead of cork.