The BioDudes handcrafted bioactive substrate for reptiles such as bearded dragons, uromastyx, leopard geckos, and other desert dwelling reptiles.This substrate is specifically designed for biomes that can get very dry and arid, but occasionally have minor humidity spikes. Terra Sahara, a one of a kind substrate is designed to hold the perfect amount of water while allowing for evaporation, preventing anaerobic bacteria growth, which is a common issue in desert terraria.