What type of pellets can Anobiid frass include?

Anobiid frass, which refers to the waste produced by wood-boring beetles in the Anobiidae family, typically includes loosely packed small, bun-shaped pellets. These pellets are characteristic of the feeding habits of these beetles as they consume wood. The texture and size of the frass can give important clues about the type of beetle activity within a structure, which is crucial for pest identification and management.

The other options describe different forms of frass that may come from various other pest species. For instance, large oval shapes may indicate different types of insects, while fine, shiny grains could be associated with some types of grain pests. Hard, rock-like pieces might be related to other forms of debris unrelated to the frass of Anobiid beetles. Understanding the specific characteristics of Anobiid frass helps in accurately assessing infestations and implementing appropriate control measures.