Bill Houghton, Sebastopol, CA
>Plywood with ground contact's not such a good idea, unless it's been treated for ground contact. I know there are parts of NJ with pretty vigorous termites (don't you folks have Formosan termites back there?).

I've been a little sloppy at times, leaving wood on the ground, and found some nests when I cleaned it up. When we finished the recent insulate-the-floor project, I spent a day cleaning out the accumulated, um, stuff (almost all of it roots or things that predated my responsibility for the house) in the crawl space, hoping to discourage termites there.