Describe two signs of termite infestation.

Mud tubes and hollow-sounding wood are two significant signs of termite infestation.

Termites often create mud tubes as a protective tunnel to travel between their colony and a food source, which typically consists of wood. These tubes are made from soil, wood particles, and saliva, providing moisture and protection from predators while allowing termites to move safely. Discovering these structures on walls, foundations, or wood surfaces indicates that termites are present and actively feeding.

Hollow-sounding wood is another indicator of termite activity. When termites consume wood from the inside out, they can create large cavities, leading to compromised structural integrity. Tapping on wood surfaces affected by termites often produces a hollow sound, signifying that the wood is no longer solid and is likely infested. This sign is crucial for identifying the damage caused by termites before it leads to more severe structural problems.

The other signs listed do not directly relate to a termite infestation. Visible insects and droppings relate more to infestations of other pests, while discoloration of leaves and wilting pertain to plant health issues, and mold growth with musty odors suggests moisture problems rather than termite activity.