We discovered a small mud pile on the concrete garage floor under the furnace, with a funny looking extension up over the wood sill. When we disturbed the pile and found small white critters, we sprayed it with Raid and went online to inform ourselves. Subterranean termites have entered. One company came out and gave us an estimate for control (another company failed to show up). For $2500 they would drill holes, one foot apart, along the width of the garage, fill the holes with Termidor and soak the soil in the crawlspace along the same width. 30 day guarantee only for the area treated. Seems to us, termites could enter from another side. Close inspection of the entire crawlspace reveals absolutely no other evidence of termites, no mud tubes, no rotten or blistered wood. There is also no water, no moisture, and no debris. [?]: Can we ignore the problem? We are very concerned about chemicals for some reason my picture showed up on the preview, but did not post. lack of experience, i'm sure.