the breeder we bought these from said they would take frozen mice. we tried them first (yes we thawed them out...lol) ares (mine) took it at first and then lost interest. my gf's refused it all together. went back and picked up 2 small mice and both snakes ate almost immediately. while im glad we got their first meal out of the way, im a bit upset they didnt take frozen. what would be the proper way to introduce them to frozen?