A moisture retaining substrate made from natural bark. Pettex Reptile Substrates are the ideal way to set up a reptile's home, replicating their natural habitat. We use carefully selected substrates from sustainable, renewable sources, heat-treated and sanitized to eradicate microorganisms for a safer environment. This substrate is ideal for rainforest or tropical living species requiring a high humidity environment, offering perfect moisture retention. Suitable for all snakes, tropical reptiles, invertebrates, and amphibians.