What is the visual evidence known as 'frass' that drywood termites leave behind?

Answer

Small, distinct, wood-colored pellets resembling coffee grounds

Frass is the term for termite droppings, which appear as small, distinct, wood-colored pellets that can accumulate in piles resembling sawdust or coffee grounds.

What is the visual evidence known as 'frass' that drywood termites leave behind?
biologyinsectappearancemorphologyTermite