Carpenter bees resemble the bumble bee, having similar body structure and coloring. However, unlike bumble bees, carpenter bees are benign creatures. Only the female carpenter bee is capable of stinging, and will only do so when provoked. These creatures like sylvan environments, as they like to burrow tunnels inside wood to set up a nest. The following article explains how to get rid of carpenter bees and keep them from coming back.
Make good use of available pesticides. Powders are the most effective pesticide for active Carpenter bee nests. Products such as Carbaryl dust (Sevin) and boric acid (Borid Turbo Aerosol) are effective.
Spray the burrows with petrol. A tried and tested remedy for bees is spraying petrol or diesel into their burrows. It’s a homemade pesticide, if you will. It will kill them, but petrol is flammable and can damage the structure you pour it over, so use it carefully.
Take caution not to get petrol on your skin or inhale its fumes. Wear an N-95 respirator, some goggles, and gloves when applying petrol to the burrow. If using a spray bottle to spread petrol, be sure to label it and set it aside for petrol-only use in the future. You probably don’t want to use the spray bottle to spritz your plants with water after using it to gas carpenter bees.
Spray the bees or their burrows with aerosol carburetor cleaner. While it’s not the most gentle product to use for carpenter bee extermination, it’s certainly effective. Aerosol carburetor cleaner has an extension tube for the can, and can be had cheaply from a discount or auto supply store. Some types will kill them instantly inside their burrow; others will make their prospective home very uninhabitable. Be very careful to not get this in your face or eyes; wear protection and read the precautions for safety.
Lay the swat down. In spring, carpenter bees fly around looking for burrows to lay eggs and deposit pollen as food for the larvae. (They use old burrows too, therefore it is a good idea to plug them.) This means they are very active for two to three weeks. A badminton or tennis racket is very effective to smack them with, especially easy with their habit of stopping and hovering for a moment.
Image Credits: Gapp