What factor primarily influences the infestation rate of powderpost beetles?

The moisture content of the wood is a critical factor influencing the infestation rate of powderpost beetles. These beetles are known to target wood that contains sufficient moisture because it facilitates their life processes, starting from egg laying to larval development. Generally, wood with a moisture content above a certain threshold becomes more attractive to powderpost beetles, as it often indicates the presence of decay or conditions suitable for infestation. Higher moisture levels not only support the beetles’ survival and reproduction but also enhance the wood's susceptibility to damage. Consequently, understanding and managing wood moisture is essential for preventing and controlling infestations. This illustrates why moisture content is a key determinant in the dynamics of powderpost beetle populations.