I actually prefer a leaf litter/soil mix for most of my amphibians, but living so close to a major Air Force installation AND living in the largest lead Superfund on the planet limits my options. (I had to dig down four feet to get to safe soil for my garden!)

Good news is, my forthcoming trip back to Pennsylvania will yield a few cubic feet of prime dirt and as much leaf litter as I can fit into a roof rack box I built special for the purpose. And moss, ferns, and a ton of other stuff for vivaria. (You know you are waaaay to into this hobby when you use a family holiday as the excuse so you can get more habitat supplies for your critters!)