The fact is, termites are non discriminatory when it comes to the type of structures they prefer. At some time, and only the termites know, your home will be on their menu. Worker termites eat and digest cellulose. They return to the main colony or a sub colony periodically and regurgitate what they have digested for the other members of the colony to feed on. Only workers eat cellulose.
Soldiers protect the colony from invaders, most specifically ants.
Although small in size they are capable of cutting an ant in half. If over run by a sizable ant colony the soldiers are of little defense. Supplemental reproductives are capable of reproducing should the queen be incapable of maintaining her egg laying capacity or if she dies. Supplemental reproductives are not capable, however, of the output of a queen. You've found what you think are termites, but you're really not sure.