Carpenter Bees
In the late-spring and early summer, homeowners often notice robust, large, black bees hovering around the outside of their homes. These are probably carpenter bees searching for mates and favorable sites to construct their nests. Carpenter bees are flying insects with shiny, bare abdomens, often mistaken for bumble bees, that have hairy abdomens with at least some yellow markings. Adult carpenter bees can get up to 3/4-1’’ long. Female carpenter bees build their nest by burrowing 1/4’’ round holes into wood. If you see sawdust piles where there shouldn’t be, inspect the underside of any wood nearby. Male carpenter bees are territorial and are the protectors of their mate and offspring. Males can be very aggressive and may dive bomb or hover close to people near their nest. However, they do not have stingers and therefore cannot sting. Female carpenter bees can sting multiple times but rarely leave their nest.

Carpenter bee vs Bumble bee

CARPENTER BEE VS BUMBLE BEE

  • What can I do to prevent carpenter bees from damaging my home or business?
    Critter Ridders recommends our Bee, Ant, & Spider Exterior Prevention or Bee Prevention Program in the spring to help prevent carpenter bees from causing damage to your home or business. Although our prevention service is very effective these destructive bees sometimes find areas to attack and build their nests. Carpenter bees prefer to attack wood that is bare, weathered, and unpainted. Therefore, we recommend painting all exposed wood surfaces to help deter these bees, especially those areas which have a history of being attacked. Wood stains and preservatives are less reliable than painting but will provide some degree of repellency versus bare wood. Common nesting sites include the underside of eaves, fascia boards, soffits, wooden shakes, deck railings, and outdoor furniture. Log homes are especially susceptible to severe infestations.
  • When should I repair the damaged areas on my home or business?
    The best time to fill in carpenter bee hole damage is in the fall, usually September. DO NOT fill in the holes during the summer as there could be eggs/larvae within the holes that are not visible. Carpenter bees have a single entrance to their nest with many adjacent tunnels within the wood. As they tunnel through the wood, they will discard bits of the wood to make room for their eggs. The discarded wood is a sawdust like material and is also used to make partitions between eggs within the nest. If you try to fill or caulk the areas before the nest is completely dead then the newly hatched carpenter bees or carpenter bees outside of the nest will burrow new holes and tunnels, causing more damage.

Hole damage caused by Carpenter Bees

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