Unfortunately for me Skip, you cannot search just the word NIX here, I've tried. The few threads that do come up when you add the word mite or treatment seem to be more of what I was asking. Someone wanting to know if it is safe, and two or three people saying no, while two or three say yes.
That is why I was hoping to hear from someone with long term experience with it.
I can see both sides of the argument, cost versus safety. That's why I am curious I suppose.