Carefresh is the best bedding, but I highly recommend the natural brown or white colors. The ones such as this purple one have extra additives and are processed differently. I had a guinea pig that lost his hair because he was allergic to the colors, but he was perfectly fine on the natural color. Also be careful if you notice your animal eating this bedding it can cause impaction so you may need to switch to an alternative such as fleece. 3 stars for the brand name and bad additives for the color, I'd rate it 5 if it were the natural Carefresh.