I use peat moss with most of my frogs and have not had a problem. I do put large reptile bark on top of it as it can be messy. It means less cleaning as long as you dont keep it soggy. You will need to be careful feeding though as frog can eat the bark when chasing food. If you feed with tweezers you wont have a problem. I have 11 frog tanks and tried a few different setups and found this one with peat moss and reptile bark the easiest.