Drywood termites are a tropical termite and not found naturally outside of the tropics. Compared to Subterranean termites, Drywood termites, do considerably less damage. This is due to their smaller colony size. Less mouths to feed means less damage!
Drywood termites swarm at night in the late spring through summer.
They readily infest the structure and when they swarm, they infest the contents too. When this happens, tent fumigation is sometimes recommended, however only as a last resort.
Below is the photo of Emergency Pest Patrol specialist working on a Drywood termite interior application.