Termites are able to detect the smallest amount of disturbance in their environment. In fact, it is not uncommon to place a log on the ground in a wooded area and have subterranean termites present within 24 hours.
This behavior also can be seen in different variations during construction. For example, in the northeast, some customized new construction practices integrate a floor heater between the subfloor and the top floor to keep the floor warm in the winter months. Unfortunately, in addition to a nice, warm floor for human feet, it also produces an artificial environmental condition that termites will detect and use to their advantage. The result will be an infestation on the subfloor. The use of imported wood also can accidentally introduce termites.
Nature always finds a way.