I have 2 that are pigs on frozen thawed. I have one who thinks that f/t is of teh devil.
Most snakes will go to f/t if you are persistant. There are a lot of tricks and they don't work well with all snakes.
If I have a snake that is picky, I'll feed it live fairly close together--every 4 days for a couple of weeks or so, then not feed for 10 days and offer it f/t. Maybe the poor thing thinks it's starving, but whatever it is it usually works. I've tricked Miss Picky into eating f/t a couple of times already. I figure that she'll be won over eventually.