I just got a new bumblebee on Aug 19 around 12 noon. The next day around 10pm, I fed him a fuzzy rat and he took it right away I think there is really no reason to wait that long especially for hatchlings and there is really only one way to find out if they are ok, get them to eat. This way the new owners get re-assured that the snake is fine. Of course, do not handle them after eating. At least for two days.

Here is the feeding video.

http://www.youtube.com/watch?v=UKYT5mVzBaM