Some of the best places to look for signs of a Carpenter Bee infestation are on your house's eaves, pool deck undersides, porch railings, window trim, wood siding, fence posts, fascia boards, outdoor furniture, wooden shakes, window frames and any other exposed wood.

If the males buzzing around bother you during your search, use Wasp & Hornet spray to knock them out of commission. Only the female carpenter bees can sting but this rarely happens and usually only when the female is being handled.

Once you've discovered some carpenter bee gallery holes, excrement streaks, and sawdust, you can go out and buy one of the following products - Hot Shot Roach Killing Powder (Boric Acid), Drione Dust, Carbaryl 5% powder, or any other dry pyrethroid insecticide dusts that contain sevin, resmethrin, cyfluthrin, or pyrethrin silica gel. All of those chemicals and products act as a desiccant that dries out the larvae and adult bees.

To apply the powder you'll either need a professional duster or something more common such as a household turkey baster. Just fill the bulb of the turkey baster with the roach powder or insecticide dust and reattach the plastic tip. Then place the tip of the turkey baster into the hole and puff some of the dust into the carpenter bee galleries. Wear goggles, gloves, and a mask to prevent the poison from touching your skin, being inhaled into your lungs or dropping into your eyes.

These carpenter bee nests can extend from just a few inches to several feet depending on how many years the gallery has been reused by generations of the insects. By placing the insecticide powder at the opening of their nest you can stop their lifecycle since the adult bees bringing back pollen will drag the dust to the cells that house the developing larvae & nectar.

Repeat the application process several times until you see activity around the holes decrease substantially. Then you can protect any soft woods such as cedar, pine, cypress, or redwood by painting them with an oil based paint.

To discourage future generations of carpenter bees from re-using old nests, plug the gallery entrance holes with balled up aluminum foil, wire mesh, wooden dowel pieces, or carpenter's wood glue.

If you suspect any structural damage to your home's exterior wood, consider replacing it with metal, plastic, or pressure treated wood to prevent future carpenter bee problems and to keep woodpecker birds from pecking apart your wood looking for a juicy larvae meal.

Now that you're home is no longer an attractive residence for these insect pests, try to restrain from eliminating any other bees you might see around your home since both carpenter bees and the similar looking bumble bee pollinate food crops and flowers which is beneficial to the ecosystem.