My 2 year old female currently refuses to eat anything other than gerbils. I gave her one at the suggestion of a pet store employee to break a 6 month hunger strike and now I can't get her to eat anything else(live or FT) and I've tried just about everything imaginable(only thing left besides force feeding directly is attempting to follow up a gerbil with a rat).

Scenting tricks don't work, and I've been holding back on giving her a gerbil for about a month now(continuing to offer live mice since I had more luck with mice than rats in the past).

So given that I can't even get my girl to take live or FT mice/rats, I can easily see where some snakes will never go to FT, especially once they've had live. Sometimes it seems they get a taste of something better and they'll never go back.