What is the age of wood commonly associated with Bostrichid infestations?

Bostrichid beetles, commonly known as powderpost beetles, infest wood based on its age and moisture content. These insects are particularly associated with 'old' wood, which is often structural timber or furniture that has been exposed to environmental conditions like humidity. The larvae of Bostrichid beetles typically develop in aged, seasoned wood that has a lower moisture content but can also occur in wood that has been previously treated if it retains enough moisture for the larvae to thrive.

Wood that is new usually does not present a significant risk for infestation, as it has not been weathered or subjected to conditions that would make it attractive to these pests. Similarly, Bostrichids tend to favor wood that has been previously compromised, making aged or older wood more susceptible to infestation. Therefore, the association of Bostrichid infestations is more strongly aligned with older wood, making the answer reflecting this age characteristic appropriate.