On Wed, 16 Dec 2015 17:47:35 -0600, wrote:

Branching off from the "Log Cabin" thread in which termites were
mentioned.

Where I live, termites do not exist (thankfully).

I have always wondered if Termites eat TREATED wood, or do they avoid
it?

If they do avoid it, it would make sense to build everything using
treated wood in places where there are termites.

It depends a lot on how "treated" it is.
I can show you a .40 CCA treated 2x6 that is about half eaten up. It
was in ground contact but they said .40 was rated for ground contact.

I don't have any more confidence in the ACQ and CAC they sell now.

If you can still find higher saturation CCA at a marine contractor
supply, it will do better. I have .80 CCA stringers under my new deck
but you have to promise it will be used for salt water construction. I
still have concrete piles in the ground under it.