Powderpost Beetle

The powderpost beetle gets its name because they can turn wood into a mass of fine powder.


Did you know that:

  • Powderpost beetles are wood boring insects.
  • Adults are reddish brown to black in color.
  • Larvae are white to cream color and c-shaped (similar to a grub, but much smaller).
  • Damage is done by the larvae as they bore thru the wood.
  • Most of their life cycle is spent in the larvae stage.
  • They generally live for 1-10 years.
  • Adults are less that 1/4″ in size.
  • They lay their eggs on or below unfinished wood surfaces.
  • Adults exit the wood leaving pinholes about 1/32″ – 1/16″ in size.
  • Powderpost beetles pose no known health risks to humans.

Powderpost beetles can damage a variety of wood products such as…

  • Wood rafters
  • Joists
  • Flooring
  • Paneling
  • Molding
  • Window / door frames
  • Plywood
  • Wood furniture
  • Log homes
  • Picture frames
  • Baskets
  • Gun stocks
  • Tool handles
  • Anything made of wood


Signs of a powderpost beetle infestation are…

  • Small exit holes in the wood.
  • Fine powder in or around the exit holes.

Homeowners are more likely to see evidence of wood damage rather than seeing the beetles themselves.


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