Make sure theyre heated to 100 degrees. Take a knife and poke a small hole in the skull of the rat. (theyre not that thick, itll be easy). Get some of the brain juices/blood to flow out. Then dangle the rat slowing in front of your snake and then do the zombie dance and see if if she pounds it.
I tried a few different methods to convert my ball and finally the braining method worked. idk why but the smell of that made her crazy. She pounded that rat like it had insulted her mother.