Arm & Hammer - The standard of purity. Hard clumps. For easy scooping. Double Duty - Advanced dual odor control. Eliminates Both: Urine odors, feces odors. A secret in the litter box. In the '70s the secret to fighting litter box odors was to add Arm & Hammer Baking Soda. Now Arm & Hammer Clumping Cat litters are infused with odor-eliminating Baking Soda and advanced odor neutralizers for a fresh smelling home. Today's better litter for better odor control. Arm & Hammer Double Duty Clumping Litter eliminates both types of odors for advanced odor control. Its breakthrough formula destroys urine and feces odors on contact, and helps keep your home smelling fresh and clean. Here is how it works: Eliminates - both feces odors, urine odors, solid clumps - 99% dust free low tracking. Rock-solid clumps let you remove the source of odors easily. Fresh Scent (Refreshing Litter) - Fresh scent refreshes litter every time you can use litter box. Arm & Hammer Double Duty Clumping Litter: Your secret to true odor control. Pet friendly. Green-e: Certified Renewable Energy. Made with 100% certified renewable electricity.