The only other thing I could say that I tried (as "gruesome" as it may be with mine) I've taken fresh killed mice, and taken a knife to their heads, opening it up so that the brains are showing (and i'll use the knife to smear some of the brains on the mouses head) then I'll use tongs to hold the mouse by the tail and dance it around 3-6 inches away from the snake (dont get too close or bop the snake on the head like i've seen some people because to some snakes this just scares the poor things!) and normally the brains do the trick for my snakes. I've had EVERY one take pre-killed once I've brained em but one snake, and that's because she just has to be stubborn. She was my first and can just be a pain in the arse!