yes, you have to be very careful about the temps and humidity. temps around 90 degrees are fatal to them. i keep mine around 80 degrees and i have a plexiglass lid.
they are really cool snakes. mine is a juvenile but he really isnt nippy. he only gets grumpy when he's getting ready to shed. i leave him alone during that time. when i was looking for mine, i came across a few breeders online...just search on www.kingsnake.com there are a bunch listed there. i happened to find mine from a local snake breeder.