Kaytee's Pine Bedding & Litter ismade with all natural pine shavings and is specially processed to help eliminate dust and wood debris that is commonly found in other pet bedding. The natural pine oils will help suppress microorganisms and provide a clean, fresh aroma! This bedding is recommended for use in open, well ventilated cages and aquariums and is not recommended for use in closed environments like habitrails or aquariums with limited to no ventilation. Ingredients: Kiln dried pine shavings