We don't normally use carefresh. We usually use desert snow, but we had a late night bug emergency in our male's tank and the pet store was out of desert snow so we just grabbed carefresh. We plan on switching back soon. But didn't want to just waste the carefresh. We just used carefresh because it's easy to clean and see where they messed. And the pet store was out of just about any good brands of anything else we use. Also, that's only one small/medium-ish bag of carefresh per tank. Carefresh puffs up A LOT.
We had them both in bigger tanks before but they never moved from their one preferred hide ever so when we moved and had to unfortunately downsize their tanks, we just eliminated the other hide they never used and put in bigger water bowls since they both like to swim. She was only under there for two nights and then moved back to her hide and hasn't gotten under the carefresh since and that was about two weeks ago, maybe two and half weeks ago. The days are starting to blur together lately... lol