Which of the following is NOT typically a sign of termite damage?

The correct answer is that dirty spots on appliances are not typically a sign of termite damage. Termites primarily feed on wood, and their presence and activity are usually indicated by various signs related to wood structures rather than appliances.

Signs of termite damage include swollen wood, which can occur as moisture builds up due to tunneling, making the wood appear distorted or bulging. Peculiar sounds coming from walls, often described as a clicking noise, may be the result of worker termites communicating or being disturbed, clearly indicating their presence. Frass, or termite droppings, is another telltale sign, as these pellets often accumulate near infested wood or their tunnels.

In contrast, dirty spots on appliances do not correlate with typical termite activities or damage patterns, making this choice unrelated to the signs one would expect from a termite infestation.