I stopped buying frozen rats from the store and have been sticking to mice, my pythons are big enough and should really be feeding on rats.

I usually take out the night before, and keep in the fridge to unthaw, then before feeding, i place them on top of the stand for around 20min, then apply heat with a blow dryer, keeping the blowdryer somewhere around a foot or so away. and leave untill warm..

then proceede to feed, and always have legs falling off tails always fall off everytime. stomacks rip open if grabed by belly.

and i only have this problem with the rats, and the very odd mouse.

am I doing something wrong or is there feeders rotten?