"They do make a spray to go on wood that can be sprayed inside on basements, crawlspaces, etc. that protects the wood and kills termites. The name escapes me now. That and the chemical that the chemical the pest control companies use can be ordered from a company in Georgia. I am getting ready to order some, and as soon as I find my notes on the place and the chemical, as well as their website, I'll post back. The chemical barrier treatment involves a trench around the house about 6" wide and 6" deep with a lot of chemical soaking. Some states won't allow homeowners to buy it but they can tell you where and who they can and can't ship to."
Have you found/remembered the produt/company you mentioned?