I cannot get my black racers to eat. How do you guys get them to eat mice? I have tried putting the in a confined area but that doesn't work, i've tried to feed them in their cage they living in ,but that won't work. I can get one to eat lizards but that is it. I have to force feed them superworms, wax worms ,crickets, parts of a pinkie. nothing works though. Any help is appreciated.