Arm & Hammer Double Duty Cat Litter Deodorizer eliminates litter box odors and helps litter stay fresh longer. Powerful moisture-activated baking soda crystals boosted with odor neutralizers destroy urine and feces odors on contact. The moisture-activated scent refreshes litter every time your cat uses the litter box. Use it with any litter (clay, scoopable, or natural; scented or unscented) to add extra odor protection to your litter box. Includes 2 Pack.