I have tried several types of substrate. Paper seems to be the safest form of substrate out there, but I've found newspaper or paper towels can be less then absorbant, and rather messy if not spot cleaned in time.
Has anyone used shreded paper products like carefresh or have any input on that type of substrate?

Its not marketed as reptile substrate, so im not sure about it.

http://www.carefresh.com/products/pe...fresh-natural/