does he have spider in him? spider BPs can have HORRIBLE aim because of the corkscrew way that they move their heads. I have actually heard of them almost not being able to eat because of their horrible aim. like some have said, laying it on the ground so that they can try getting it on their own might help, but make sure the bedding isn't something that would attach to the rodent and could become dangerous and cause issues if digested by the snake. I really hope you can get your snake eating again! best of luck!