After haveing uneaten rats escape and scare the crap out of me when I found them later, I switched to ft. Snakes wouldn't eat for months, never gave them a choice, once they got hungry enough they took them. Never looked back, I order 100+ at a time keep them in a cooler(I like to think it keeps the other food smells off) in a big freezer. So for 10 years now they have been on nothing but ft.