Rain Forest Substrate™ is the most widely used and versatile substrate available. This versatile substrate can be used wet or dry and is available in a variety of grades. Being resistant to microbial action, it is physically, chemically and biologically stable over several months. It is a natural product from sustainable and renewable resources and is eventually biodegradable. A real favourite with all types of animal keepers, Rain Forest Substrate not only performs superbly, it looks the business as well!