"Reptile Mineral Substrate 4Kg Snake/Lizard Calci Sand is suitable for terrariums of desert habitats that can accommodate reptile species from dry environments. Simply spread the product evenly in the bottom of the terrarium to create a bed of substrate. It is not a dangerous product if eaten by the animal as it is an excellent source of calcium beneficial to the body. Clean the soiled parts systematically and replace the entire substrate every six weeks."