Hi there José,
to All Things Plants!
Termites are everywhere, on every continent (except maybe Antarctica?). And I even had to replace a wall once because of infestation on my enclosed porch. Upon reconstruction I had the soil around the perimeter of that area treated with a barrier product, and I've never encountered another problem. Like everything else they fit into nature's re-cycle program just as much as bees, ants and scavenging animals. But with that said I cannot remember a problem in the gardens.
Years ago we had a large tree removed, and I left the stump in the ground which the termites gradually devoured over the years. They left a rich, dark material where the stump once stood; and that area was turned into one of our most productive flower gardens. Unless they bother the plants or house I leave them alone. My worst garden enemies are the above ground kinds pictured below. It's not a perfect world.
Once again, WELCOME! I know you will like it here.