Care Fresh Natural is the one that started it all, the first pet bedding made from virgin reclaimed cellulose. You'll love original Care Fresh because it's absorbent & controls odour. It's also all natural & biodegradable. The Care Fresh formula is free from contaminants like pine or cedar oils, so it is safe for your small pet. (Aromatic oils in pine & cedar bedding have been shown to have adverse health effects on small pets.) Plus it provides a more natural living environment promoting instinctive burrowing & nesting behaviours of small pets.