Call a professional. They have access to chemicals and equipment that is much more effective that anything you can buy.
It may just be carpenter ants. Termites usually don't make noise, but the ants do. They are much easier to kill.
If it's subterranean termites, you don't tent to get rid if them, you flood the soil around the house with chemicals that gets carried back to the nest and kills them. The latest stuff doesn't smell bad, you don't have to leave.
Been through two rounds with the bastids in my previous house, it sucked. But it sucks more fixing the damage, so get it taken care of ASAP.