You got a snake to eat them frozen? My one-time-roommate had a boa who ate mice....LIVE mice. The pet store saved the "mean" ones for us. Snake wouldn't eat dead mice, but stunned was OK, so at least we didn't have to put a fully alert mouse into the snake tank.

Nature, red in tooth and claw....and snake coil.

Maybe Hex would settle for frozen rabbit? Easier to get.