This is Fine Grade 25 LitreProRep Orchid Bark Chips are used for all species that require a humidenvironment. Amphibians, forest or jungle living reptiles and invertebrates allthrive on this safe 100% natural poduct.Directions:Spread the substraate evenly over the bottom of the enclosure to a depth of at least 2"(5cm). Bark Chips can be moistened to provide extra humidity but avoid making them toowet or waterlogged. Spot-clean daily and completely replace every two or three weeks, ormore frequently if it beomes heavily soiled. If you are using an under-tank heatmat asyour heat source do not use a thick layer of Bark Chips as this may cause the heatmat tooverheat. Please refer to the heatmat manufacturer's instructions for more information.