Virgin Cork Bark is all natural and pet friendly. It is 100% sustainable and can withstand ANY weather without rotting, molding or disintegrating. Cork Bark is ideal for all pets like reptiles, amphibians, arachnids, and all small pets. Cork Bark Rounds / Tubes and half rounds provide hides for your pets for hiding and safety. Cork Bark Flats can be used to create a naturalistic background in a vivariums / terrariums where plants like bromeliads, orchids, tillandsias etc. can grow on. Also often used in aquariums and paludariums for turtles and frogs to hang out on since cork bark floats.