No idea either, other than mice and ASFs. But don't assume ASFs are the cure-all for stubborn feeders, they aren't. Yes some BPs will only eat them, but bred ASFs for awhile and my stubborn feeders would not eat them, and nor would a friend of mine's stubborn feeders.

Usually babies won't eat because the tub/tank set up isn't perfect. Hatchlings are much more finicky and need everything to be just right. Small tubs, small hides, and good temps are what they need. I wait till all my hatchlings have shed before moving them to their own tubs. Their tubs have aspen bedding and are filled with crumpled newspaper-as well as in their hides. 10 out of 12 of my babies last summer ate the day after they were moved to their own tubs.