Desert Repti-Sand Red is an all natural substrate for desert dwelling reptiles. It is made from pure, very fine Quartz desert sand. It contains natural colors and no added dyes or chemicals. Repti-Sand is ideal for bearded dragons, leopard geckos, tarantulas, uromastix lizards, soft-shell turtles, scorpions, sandfish lizards, collard lizards, plated lizards, sand boas, desert iguanas, burrowing frogs, and desert or semi-terrestrial skinks. Repti-Sand stimulates natural digging and burrowing behavior, as well as egg-laying.