Which of the following is NOT an indicator of termite damage?

Unexplained water leaks are not an indicator of termite damage because they typically signal plumbing issues or water intrusion rather than insect activity. Termites primarily cause damage through their feeding habits on wood and cellulose materials, which results in structural deterioration. The other options specifically relate to signs that can be directly attributed to termite infestations. Discolored or sagging wood indicates potential structural issues from termites feeding, swarming insects point to active colonies, and visible mud tunnels are a clear sign of termite behavior as these are constructed for travel between their food source and their nest. Thus, the presence of unexplained water leaks does not connect to the identification of termite activity in a home.