They are fairly easy to keep if you can find suitable food for them. Like I said, search this forum for threads pertaining to worms and feeding. I'm going of memeory but it seems to me that most of the worms (red wiggler, leaf worms) that you find in bait shops are unsuitable for snakes. Also, with a worm diet you are probably going to want to supplement with calcium a bit. Just dip one end of the worm in come calcium powder and they shouldn't have a problem.

Good Luck