The extra strength formula of ARM & HAMMER™ Cat Litter Deodorizer Double Duty destroys feces and urine litter box odors on contact. This odor eliminator is made with ARM & HAMMER Baking Soda Crystals to help your litter box stay first-day fresh longer than cat litter alone. Its moisture-activated scent refreshes litter every time your cat uses the litter box. Use ARM & HAMMER Cat Litter Deodorizer Double Duty regularly to help prevent litter clumps from sticking to the box. This 30 ounce cat litter deodorizer is safe for cats and owners to use every day when used as directed. Add it straight into the litter box to deodorize most types of cat litter—scented, unscented, clay, scoopable, or natural.