I'd have to check back with the Breeder I know who uses it to get specifics like the name of the moss but he carries it in his petstore.
The way it works is you have a layer of splintery/fiberous woody loose material that is the food for the moss. That is laid down in a layer I think about 1-2 inches deep. The only maintenance of the moss after that is misting.
You do need to pick up the solid waste from the Boa but it just rests on top of the moss so thats not a problem. Much easier then digging it out of the sphagnum moss like I do lol.
I believe the liquid wastes end up operating like fertilizer but I am unsure.
It is my understanding that it never has to be removed/replaced but even if you did all it would entail is lifting out the moss pads, rinsing them, replacing the moss food layer, and putting the moss pads back in.
The stuff is amazing for more naturalistic setups for amphibians or reptiles that are suited to it.
Now it is possible, given I haven't started using it myself yet, that I may be misremebering details but to the best of my knowledge thats how it works.
The breeder I know who uses it for his BRB's is Jeremy. Him and his wife Angel run a pet store in elk grove, host the Sacramento reptile show, and breed many varieties of reptiles on their own.
I'll try and double check the details and get back to you with them next time I go in for rodents.
Sean.