Which statement is true regarding the damage caused by false powderpost beetles?

The statement about false powderpost beetles targeting both softwood and hardwood is accurate. These pests are known for their ability to infest a wide range of wood types, which includes various hardwoods like oak and maple, as well as softwoods such as pine and fir. Their larvae feed on the wood, leading to structural damage over time, regardless of the type of wood. This capability to infest both softwood and hardwood makes them a notable concern for homeowners and builders alike.

In contrast, the other statements do not hold true as they could mislead about the nature of false powderpost beetles. It is not accurate to say they typically cause minimal damage; in fact, their infestations can lead to significant destruction, particularly in wooden structures. Additionally, claiming they can only infest older wood is misleading since they can attack both new and aged wood. Finally, while some wood-boring insects can contribute to the ecosystem, false powderpost beetles are primarily considered pests rather than beneficial creatures that would positively impact wood.