Shop / Cat Litter & Accessories / World's Best Clumping Formula Cat Litter World's Best World's Best Clumping Formula Cat Litter Weight: 28 lb $30.99 Sorry, this product is currently out of stock. Information CLUMPING CAT LITTER Ideal for homes with one or two cats, Clumping Formula is the unscented clumping cat litter with outstanding odor control and tight clumping ability. And because they'll scratch and cover, our quick clumping cat litter provides maximum odor control, while minimizing dust and tracking around your home. Customers also liked Customer Reviews