I found this article to be informative not only for guiding the inspector, but also valuable information to pass along to the homeowner. As highlighted in the article certain preventative measures could help avoid costly termite damage and treatment. Such measures include eliminating a food, water and cover source for termites. Proper grading, downspout location and adequate clearance between soil and the structure are important exterior components. Routine monitoring for shelter tubes and keeping vegetation away from the structure are also helpful. Interior factors include checking for plumbing leaks and checking window sills for termite wings and saw dust in the spring and fall.