Kaytee Aspen Bedding and Litter is manufactured with all natural aspen shavings and is specially processed to eliminate dust and wood debris found in other bedding. Aspen bedding comes from hardwood, eliminating aromatic oils found in other types of wood bedding. Can be used in all cages, aquariums and habitrails. A natural biodegradable product. Ingredients: kiln-dried aspen shavings.