Customers either love or hate this litter. Advantages: all natural: contains only pine, so even the most sensitive cat shouldn't be allergic, pellets don't track, excellent urine odor control, economical price, environmentally friendly. Disadvantages: some cats don't like the pellets (most cats will adjust if transitioned properly - see directions), poop isn't covered as effectively as in other litters. This litter is safe for kittens, ferrets, and post surgical cats.