After all, we're dealing with chemicals that are expensive and a complete treatment might even be unnecessary. Most of these physical alterations could be performed by a homeowner or a handyman. Lawsuits, greedy lawyers and plaintiffs haven't helped either. The result, of course, can make a sizeable dent in your bank account and your own personal experiences with exterminators. Termites will use those tunnels you saw to gain entrance.
Susceptible areas are where doorways, walls and seams in concrete are poured.
Most of these areas you won't be able to see, but if you watch, each spring, and then take care of the problem when it appears, you might well live there quite some time without having a termite problem - especially if it has been treated in the past. And you can forget the protection from the wasp and hornet freeze - termites could eat that for lunch and shower with it at the end of the day. You need a long-lasting termiticide for that job. Get back if you have any more questions. And thus escape detection and keep on working.