I used a bunch of Spectracide Terminate stakes, and they gobbled them up like candy. I moved before I could tell if the results were permanent. Had my home trenched and rodded, using Bayer "Premise", but had a flare-up in the same area that I observed a swarm in the home. I would do it myself next time, and would ONLY use Termidor or it's equivalent. Outside of Chlordane, this stuff is supposed to be the best by far.
If you go pro, make sure you insist they mix any chemical from a sealed bottle/bag in front of you... I truly think my folks diluted it too much/forgot/whatever. As mentioned, keep 6" or so of space between the framing and dirt, look for mud tubes, keep mulch away, and keep it dry with good drainage/slope! Moisture problems are a huge invite for termites. Good luck.