For the sake of my snake I have decided to stick with live mice. I have pretty much concluded that she just doesn't really want F/T and I see no reason to keep trying to force it on her. And why bother with pre-killed since she would rather do the kill and mostly refuses anything already dead, and has never been injured once with live. She will eat very small rats too, just as long as it is alive and she gets to do the kill. But mice is her favorite, I have zero problem getting her to eat live mice And because of a very limited supply and high cost lately of small live rats, ( and the rare danger they present ) I have decided to just go with the mice. But at 3.99 a mouse at Petco and 2.50 at the local pet store, and her now being over 1000 grams I am now trying to breed my own mice. I have a 30 gal. critter cage that they are in. I hope this goes good. I am now in the process of trying to learn all I can about breeding mice. But if successful it will be a lot cheaper. More labor, but I am finding it kind of interesting. I am using aspen and shredded papers for substrate for the mice.