Which of the following is a common sign of a termite infestation?

A common sign of a termite infestation is the presence of mud tubes and wood damage. Termites, particularly subterranean termites, create mud tubes to travel between their underground nests and their food sources, which are typically wooden structures. These tubes serve as protection from predators and help maintain humidity levels necessary for their survival.

Additionally, wood damage is a significant indicator of termites at work. Termites consume wood from the inside out, often leaving little exterior evidence until severe damage has occurred. This type of damage can include hollowed-out wood or structural weakening, which can compromise the integrity of buildings. Recognizing these signs early can help in managing and mitigating the impact of a termite infestation on a property.

The other signs mentioned do not indicate termite activity and are associated with different pests or issues unrelated to termites. This further emphasizes the importance of identifying the correct indicators for effective pest control.