By Walt Cline
Getting rid of Carpenter Bees depends on the timing of the year. You can prevent carpenter bee infestations if you tackle the situation early enough. If you have an active Carpenter Bee infestation, we can also advise you on how to get rid of carpenter ants and exterminate them.
Recommended Residual Insecticide Concentrates for Carpenter Bee Prevention
If you do have an active carpenter bee infestation, following these steps below would ensure success and exterminate carpenter ants.
Steps 1-4 products found in Carpenter Bee Kits
How to use the Carpenter Bee Kits
Aerosols To Spray
Only the female carpenter bee will sting if provoked.The sting may be painful, and a cool ice pack can sooth the sting. Males (the ones with the yellow faces) cannot sting (they do not have stingers), but can be bothersome . You can kill the hovering males with a contact aerosol such as, Bonide' s Wasp and Hornet Killer. The only reason for killing the males is their nuisance factor, since they can't sting.
Residual Liquid Treaments To Spray
Spray the areas where carpenter bees are boring in any unpainted or unvarnished wood with Optimate CS or Cyper WP. Sometimes they may be boring in painted or varnished wood. Their holes are usually located on the underside of any wood surface including siding, soffits, overhangs, decks, fence posts, fascia boards and window frames. We recommend spraying during the spring twice at intervals of 3-4 weeks.
For severe infestations of carpenter bees on cedar and log structures, you may need to repeat the treatments more than twice. We suggest a interval of two weeks for spray treatments. After each spray treatment, apply D-Dust, Delta Dust or Drione Dust to all possible carpenter bee holes or entry points.
Optimate CS or Cyper WP will last 2 to 3 months, leaving a residual for that long, taking it through most of their season.
Carpenter Bees can look like Bumble Bees; large, with yellow and black patterns. They are about one inch and may have some metallic reflections ranging from a dark blue, yellow, green or purple tints. Their abdomens are shiny, which are different from Bumble Bees, which have more hair. They are commonly sighted in the spring hovering like a helicopter around eaves, porch rails, and under decks. Some times, they are called "wood bees", because of the way they bore into wood. Carpenter Bees do not eat the wood for nutrition.Carpenter bees, as pollinators eat nectar and pollen from flowering plants.
The female carpenter bee will bore a channel or main corridor in the wood from 6 " to as long as 4 feet to lay their eggs in "galleries". She will deposit an egg, bring in a mass of pollen for the newly hatched larvae to feed on, and then seal it all off to ensure it's development before she repeats the process for the next egg.
Although, they are a wood boring insect, they are not considered a true structural pest. They do not spread through out the entire structure, but prefer unpainted or finished wood.
For More Information : Carpenter Bees
Signs of Carpenter Bee Infestations
Carpenter Bees make holes about 1/2 inch in diameter. They prefer unfinished wood and can drill and create tunnels in seasoned hardwoods, softwoods and decaying woods. Look for "frass", that looks like sawdust from these drilling areas.
For More Information : Carpenter Bee Identification and Signs