Powderpost beetles are on a similar level to termites in terms of household pests. These beetles are woodboring beetles, and are named because, given the time, powderpost beetles can reduce wood, such as a post, to a fine dust, or powder. They are small bugs, usually not reach more than a half inch in length, but they can have a large impact on your home. Specifics on size and shape of these beetles does vary, as there are many different species that fall under the name of powderpost beetle.
Powderpost beetles are not always easy to notice, as all larval development happens within the wood. The larvae will eat their way through the wood and form meandering tunnels. They stay in larval form for anywhere from one to five years, so serious damage can be done in this stage. This is especially true considering it is usually only upon reaching adulthood when a powderpost beetle really reveals itself. Popping out of the wood and leaving behind holes called shot holes, the beetles will mate, and lay a new batch of eggs in or on the wood.