What type of frass does the deathwatch beetle produce?

The type of frass produced by the deathwatch beetle is characterized as coarse and gritty. This is due to the fact that deathwatch beetles primarily infest hardwoods, where they bore into the wood to feed and develop. As they carve out tunnels and create their nests within the wood, they produce frass that consists of wood particles that are larger and more textured compared to the frass of other insects that may feed on softer materials.

The gritty nature of this frass can often be indicative of the type of wood being infested and serves as a useful identification clue for pest control operators. Understanding the texture and composition of the frass can help in correctly identifying the pest and implementing appropriate control measures.