What best describes the frass ejected by Bostrichid pests?

The frass ejected by Bostrichid pests, commonly known as wood borers or powderpost beetles, is best described as gritty and pellet-like. These insects primarily infest hardwoods and produce frass that consists of small, granular particles. This unique texture arises from the wood material that has been digested and excreted by the beetles.

The gritty nature of the frass is characteristic of Bostrichids; it often resembles tiny pellets rather than fine dust or coarse materials. This form of excrement serves as a clue not only to the presence of an infestation but also helps distinguish it from the droppings of other wood-boring pests, which may produce different types of frass based on their feeding habits and the materials they target.

Understanding the nature of frass is crucial for pest control professionals, as it aids in identification and leads to more effective management strategies targeting these pests.