Scented vs unscented cat litter: which is better for odor?

Scented litter seems like the obvious fix for a smelly box. The veterinary sources we read point the other way:

"Research has shown that most cats prefer fine-grained, unscented litters... Many cats are put off by the odor of scented or deodorant litters. This is also a good reason not to place room deodorizers or air fresheners near the litter box." — OSU Indoor Pet Initiative

"Most cats prefer unscented litter." — Cornell Feline Health Center

The practical risk: if the cat dislikes the scent and starts avoiding the box, the odor problem gets worse. OSU puts it simply: "If you find the odor offensive, the cat will also find it offensive."

What to do instead

• Choose an unscented clumping litter (see comparison).
• Scoop at least daily and wash the box regularly (see cleaning schedule).
• Use a bigger, open box (see size and covered vs open).