Thanks for all the advice. Ill have to check around of some live rat pups. I'm right between several big cities, Indianapolis, Dayton, OH, Ft. Wayne, so I am sure I can come up with some and then I can get some F/T.
If you absolutely can't find any live rat pups you could use a 18-32 gram live adult mouse. But I would try real hard to get the rat pups. Good luck. Were the boys excited to finally have their snake?