I've been fighting my ball for the last 4 weeks trying to switch her over. She's taken 2 out of 4, but skipped a feeding between each, so by the second week (and fourth week) she was a bit hungry.
I've heard that dipping the mouse in chicken broth drives BP's crazy. I've also heard that if you take a razor blade to the back of the mouses skull and get some brain slime oozing out, that drives them crazy as well.
I gave both a shot, and she didn't seem to care for either.