I thought some of this discussion was interesting enough that I'd post the link here. Pay particular attention to Kathy Love's posts.
Summary for those who don't want to be bothered with the link: She talks about keeping big colonies of ASFs in big bins, in which she makes maze-like structures. She says she usually finds the moms & babies in one section, the weanlings in another. Sounds kinda neat.
http://www.cornsnakes.com/forums/showthread.php?t=81255