Which statement best describes mud tubes in termite inspections?

• A. They are random lines on wood caused by moisture.
• B. They are protective coverings termites build in wood.
• C. They are mud tubes used by subterranean termites to travel between soil and wood, indicating infestation.
• D. They indicate paint damage only.

Answer: (C)

Mud tubes are a sign of subterranean termite activity. Termites need moisture from the soil, so they construct narrow tunnels made of dirt and saliva that run from the ground up to wood. These tubes protect the termites as they travel and feed, allowing them to move between soil and wood without drying out. Finding such tubes strongly indicates an active infestation and the potential for ongoing wood damage, requiring treatment.

Other options don’t fit because those lines aren’t simply moisture marks, and termites don’t create protective coverings inside wood. It’s also not about paint damage; mud tubes specifically point to termite movement between soil and wood.