What is a key indicator of prior termite activity?

Frass, or termite droppings, serves as a critical indicator of prior termite activity due to its unique characteristics. Termite droppings are small, pellet-like feces that vary in color depending on the wood being consumed and the species of termite. The presence of frass typically indicates that termites have been actively feeding in the area, as they excrete these pellets near their galleries or exit holes.

Frass can often be found accumulating near wooden structures, and its discovery helps pest control professionals identify the extent of an infestation. Regrettably, many homeowners may not notice the frass until significant damage has occurred, making it a vital evidence point for detecting termite presence and activity.

While the other options provide clues about potential termite damage or presence, frass distinctly indicates ongoing or past feeding habits, establishing it as a primary sign of prior termite activity. Wood discoloration and hollowed wood sounds may suggest damage but do not confirm active infestation. Termite wings are often found during dispersal seasons, but they do not provide direct evidence of previous feeding in a specific location.