Termites in the Middle Tennessee area (and the southeast for that matter) are subterranean, which means they stay underground. You need to watch what stuff you put on the ground around or under your house. Termites will crawl up from the ground and start eating and you may never know till it's to late. Here's some termites chewing on the boxes of some flooring behind a house in south Nashville.
http://www.allamericanpestcontrol.com