Peastmoss is a right pain to clean! , if you change it every week it might work... But it will retain too much moisture for most snakes.
Maybe Try aspen snake bedding?
i use aspen now,,,i find it easy to use and better looking than Breeders Choice..
I do have some reptisand in my smaller enclosures but always worry about it with snakes eating off it..even though it is calcisand and supposedly good for snakes..
I wouldnt use peatmoss myself,,,
Peat moss is better used in nest boxes I hear best not to use any damp or anything with loose particles that snakes could eat but then again they have such concetrated stomach acids probably wouldnt hurt