I recently got an albino pacman frog. At the pet store they told me to put this substrate all over the bottom of the cage. I don't remember the name, but it expands in water and is like mud. Anyways, it has begun to mold. He really likes to burry himself in it, but is it nessesary to cover the enclosure with it. It cost $15, which to me seems insane if it needs to be replaced every week. Any help would be appreciated.



