One cat, two litter boxes?
One cat should have two litter boxes; two cats need three boxes, etc. Why? Cats are fastidious. Some will poop in one box and pee in another. Some won’t share with another cat. This is a good thing.
Scented or unscented
Scented litter is for the benefit of humans, not cats. Cats’ sense of smell is 14-times better than ours, says Garber. Their sensitive noses have an aversion to strong, perfume smells.
Clumping or non-clumping
Clumping is for human ease of cleaning, not for cat health. Most experts recommend more natural litters. Ask your vet.
Location, location, location
Put the box where your cat has privacy and easy accessibility.
When it’s a no-go
If your cat isn’t using her litterbox, she may need more frequent cleaning. Sometimes a change of litter brand—often to a less-scented one—will do the trick. If the problem continues, visit your vet to screen for medical issues.