What gives powderpost beetles their name?

The name "powderpost beetles" is derived from the fine, powdery frass they produce as a result of their wood-boring activities. These beetles infest and digest wood, primarily hardwoods, and as they tunnel through, they break down the cellulose in the wood, ultimately excreting it as very fine, powdery droppings. This powdery frass is often visible at exit holes in the wood, and it contributes to the distinctively dust-like appearance that can indicate an infestation. Understanding this characteristic is crucial for pest control professionals when diagnosing wood damage in structures and taking appropriate measures to manage these pests.