Dr. Elsey's Ultra Unscented Cat Litter vs World's Best Cat Litter

Dr. Elsey's initial pour kicks up a real cloud of clay dust — it settles, but if you or your cat have any respiratory sensitivity, you'll feel it. World's Best is near-zero dust by design, because corn granules don't pulverize the way clay does. For most people this is a minor annoyance; for asthmatic cats or owners, it's the entire decision.

Bentonite clay clumps rock-hard — you can scoop a clean ball without it crumbling back into the box. World's Best clumps well for a plant-based litter, but 'well for plant-based' isn't the same as clay-hard. In a daily-scoop routine this matters less, but if you skip a day, Dr. Elsey's clumps still hold; World's Best clumps can soften and break apart.

Dr. Elsey's runs roughly 52 cents per pound on a 40-lb bag. World's Best can hit double that per pound at retail. Yes, World's Best lasts longer per scoop because it's lighter and you use less — but the math still favors Dr. Elsey's for most households. Over a year with two cats, you could easily spend $80–$120 more on World's Best.

If you own a Litter-Robot or any weight-sensor-based self-cleaning box, World's Best is simply off the table — its lightweight formula confuses the sensors. Dr. Elsey's medium-grain clay works reliably with these boxes, which Good Housekeeping specifically called out. This isn't a minor compatibility note; it's a binary incompatibility that eliminates World's Best for a growing segment of cat owners.