Mine used to take f/t, but suddenly stopped regardless of what I tried. I posted several threads on here and tried all the tricks people suggested, but it was a no-go.

She would always eat them in odd ways too, like swallowing them from the back end first and never constricting. I hate feeding live b/c of the potential bite risk to my snakes, plus I do feel that CO2 is probably a bit more humane. She's my only animal (other than frogs that eat insects) that eats live, but it eventually got to the point that she had to eat something or starve. I still try to get her back on f/t now and then, but haven't had any more success than I did initially.

My main issue with live feeds is when I see people (especially with frogs... I guess it's something about a frog eating mammals that really attracts idiots) who are only feeding live because they want to seem 'cool'. Of course, they're also the ones I see most often feeding prey that's too large and walking away. You're eventually going to see bites with live-feeding no matter what, but if you monitor it you can usually minimize the damage.