Completely natural frog moss for use with frogs, toads, salamanders, garter or green snakes, and all other moss environment species. Use as a top substrate or decorative accent in vivarium/terrarium applications. Frog Moss (also called Pillow Moss) will come back to life and grow in proper terrarium conditions. It increases humidity in terrariums making it perfect for all high humidity loving species of reptiles and amphibians. Zoo Med's Frog moss can be washed and reused several times before needing to be replaced.