Kevin:

Actually, and not to put too fine a point on things, you simply did not really read my post. They were questions. No assumptions were made else they would not have been posited in the interrogative form. So, at the risk of repeating myself. You assume more than I am willing to.

I have seen termites living and thriving in .60 CCA treated yellow pine (intended for below grade application) below grade. I've also seen them in .40 CCA lumber in ground contact and .25 CCA materials above grade. All of these materials were properly installed according to their solution percentage and yet, termites. Go figure.

Otherwise we are in agreement, mostly, at least as far as decks are concerned.

Aaron