Which signs commonly indicate a termite infestation?

The presence of mud tubes, discarded wings, and small holes in wood is a well-documented set of signs that indicate a termite infestation. Mud tubes are often constructed by termites to travel between their underground nests and their food sources, providing protection from predators and environmental conditions. Discarded wings are typically found after swarmers (reproductive termites) have left their colonies to mate and start new colonies; the presence of these wings suggests that a colony is nearby. Small holes in wood can indicate where termites have bored into the material, leaving behind signs of damage.

Understanding these signs is crucial for timely identification and treatment of termite infestations, preventing significant structural damage to properties. The other options provided, while potentially indicative of various pest problems or conditions, do not specifically correlate with termite activity.