By the way, when I mentioned that I use a thick layer of paper shreds (on top of a lining of paper towels) in most of my tanks, much of that is clean paper from my mail & business papers that I run thru a shredder (the kind they sell in office supply stores). But I usually mix things into that, depending on which snake it's for- some (that need less humidity) get Carefresh mixed in, but for others I mix in other commercially-sold "paper-shred" products sold for small pets (just for better texture overall). I've used Carefresh for many years, & over that time it has changed- it used to be soft & fluffy, but now it's very compressed- so much so that you have to manually separate it- that's partly why I actually prefer mixing it with my own paper shreds- to add fluff, but it's the Carefresh that is most absorbent.