If your structure's wood beams sound hollow when you tap them, termites have probably been eating them from the inside.
"Mud tubes" on the exterior of your walls
Termites build mud tubes to provide temporary moisture retreats.
Cracked paint on your wood surfaces
This usually means termites have found a way into your structure's foundation.
Discarded wings
If you see insect wings in groups, they are probably from reproductive termites called "swarmers".
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