Our house is 37 years old and we've lived here about 1.5 years. When we bought the house, we had a termite inspection and none was found. Later while installing a new garage door we noticed the there was some old inactive termite damage in the header above the door and some surrounding wood. The previous inspector never found it.

We also have drilled holes all along the cement block walls near the floor. I'm guessing these were past treatments.
Everything was fine until this weekend when we did some garage cleaning. We had some extra wood trim pieces and an extra solid oak threshold piece that that were on the floor. The oak piece had obvious channels in it while the other pieces were untouched. It looks like they came up through a joint/crack between the garage floor and the wall.
Does any one have any good experiences with termite control companies? Right now my plan is to call a few companies with free estimates and have them come out and assess the situation and compare their conclusions/services.
Thanks!