If you are looking for a paper substrate, my advice is https://www.uline.com/Product/Detail...Flute-24-x-250
I know a bunch of boa breeders who use the stuff and say its good. You just put the corrugated/riffled side up so the boas can still get grip and the piss settles in the bottom of the riffles so the snake isnt sitting in the piss.
And the part i liked the best is the snake doesnt get substrate in its mouth. I use cardboard to feed all my snakes on but they love to drag their food around![]()