Carefresh Ultra White Pet Bedding www.petsmart.com - $25.99 (50 liters) Product Description: The bright, white color of this distinctive bedding creates a fun space for your pet. Free of pine and cedar oils, the superior odor control and powerful absorbency of Care Fresh Ultra will keep your pets home cleaner longer. RattyRat's Review: This is really good litter and really good bedding material. This litter is easy to find, good with odor control, almost dust free, and very comfortable for your rats to walk on. Unlike the grey Carefresh, rats don't usually have allergies to this white version. It is expensive though.