Couple years ago I think I might have had the same kind of infestation your talking about. I was splitting some cherry and was seeing the normal few ants then BAM I split a big round and the piece I was holding on the splitter came alive. With out exaggerating there must have been millions of the darn things. I pick the piece up and throw it down and the ground looked like it was moving around me. I start stomping them and started feeling them crawling all over me. Then I found out, the giant black ants some pushing 1 inch long can BITE! Thank god I dont welt up real bad from bites only had few welts where they got me good. The funniest one was bout an hour after I cleaned up that mess, I was driving home and felt a severe pain on my ear lobe. Looked up in the rearview and the largest ant I've ever seen was hanging on for dear life.
I take the severly infested wood out to a spot I save for camping wood that I burn. I would not take the chance of taking the really bad stuff in or near my house nor do I think a firewood customer would appreciate it much.