What is a common indicator of termite infestation in wood?

The presence of mud tubes is a strong indicator of termite infestation in wood. Termites, specifically subterranean termites, construct these tubes as a means of protection and to maintain the necessary humidity they require to survive. They typically create these tubes from soil, wood, and their saliva, forming a shelter that allows them to move between their underground colonies and above-ground food sources without exposure to open air.

Finding mud tubes is critical for pest control professionals because they signify active termite migration and feeding habits in the area. Inspecting for these tubes can help determine not only the presence of termites but also the extent of the infestation, guiding effective treatment decisions.

In contrast, while the presence of fine, powdery frass can indicate the activity of some wood-boring insects like drywood termites, it is not as definitive as mud tubes for subterranean termites. Similarly, visible exit holes may suggest the presence of wood-boring pests but do not specifically point to termites. Lastly, a wet, rotten smell can imply issues related to moisture and decay in wood but does not directly confirm termite activity. Thus, mud tubes remain the most reliable sign of termite presence in wood.