Clumping
Urine forms hard clumps to be scooped away regularly. Instead of completely changing the litter, you only replace what is scooped out. There is also less odor since the source of odor is removed. The softer texture and smaller granules is easier on paws, and it is less expensive because less is used and discarded.

Antibacterial
Stops the growth of odor causing bacteria present in cat feces.

Charcoal
Absorbs odors and locks them in to virtually eliminate odors. It is similar to how charcoal works in aquarium filters.

Scented
Fragrance is used to cover up odors and make the living area more pleasant.

Unscented
Some additives in unscented litter, like charcoal, are added to unscented litters to virtually eliminate odors without the fragrance.

No-Track /  Lo-Track
Keeps cats from tracking litter all over the house.

Flushable
Can be flushed down a toilet and is biodegradable.

Paper
Paper litter looks and feels like regular clay litters, but is made with recycled paper, and is dust-free.

How much litter should be used?

You should use enough litter in the pan to allow your cat to sufficiently cover any waste it leaves. Cats don't like to feel the bottom of a litter pan when they're burying their waste. Give your cat at least a 2-inch base of litter.

How often should litter be changed?