Leaf litter is the most natural ground covering for the terrarium and most closely replicates the typical habitat rainforest species will encounter in the wild. Live Oak leaves are small, approximately 2" long and 1/2" wide, making them perfect for the smaller sized terraria. 5 oz. bag provides ample coverage of a ten-gallon terrarium. Note: these leaves are ultra-clean and have had all of the chaff and debris removed from them, unlike many others available.