ARM & HAMMER™ Double Duty Cat Litter Deodorizer eliminates litter box odors and helps litter stay fresher longer. Powerful moisture-activated baking soda crystals boosted with odor neutralizers destroy urine AND feces odors on contact. Moisture activated scent refreshes litter every time your cat uses the box. Use it with any litter (clay, scoopable, or natural; scented or unscented) to add odor protection to the litter box.