ARM & HAMMER Clump & Seal Multi-Cat Litter seals and destroys odours before they can leave the litter box. Give us 7 days and we’ll give you an odour-free home, guaranteed. This extra-strength multi-cat formula is specially designed for households with more than one cat. ARM & HAMMER Clump & Seal Multi-Cat Litter forms a tight seal around odour and destroys it with unique odour eliminators and ARM & HAMMER Baking Soda. Plus, your cat will love the softer feel. Clump & Seal features a 99.9% dust-free formula and forms rock-solid clumps for easy scooping. Say goodbye to crumbly clumps and dusty paw prints on your floors. For over 170 years, ARM & HAMMER products have provided a safe and effective way to help keep things smelling fresh and clean. An odour-free home starts with ARM & HAMMER.