To provide a means of cleaning itself and to help mimic its natural habitat, a large bowl of sand should be available at all times. Dust bathing is a vital part of a hamster's daily routine and helps to keep their coat healthy and shiny by removing excess oils. The sand can be kept clean by sieving or washing out with water and drying. Children's play sand is a viable option for this, but be sure what happened to it (such as if you need to bake it).