ARM & HAMMER™ Cat Litter Deodorizer helps keep the litter box odor free and stay first-day fresh longer. ARM & HAMMER™ Baking Soda eliminates odors on contact. Moisture activated scent refreshes litter every time your cat uses the box. ARM & HAMMER™ Cat Litter Deodorizer helps prevent urine clumps from sticking to litter box. Use it with any litter (clay, scoopable, or natural; scented or unscented) to add odor protection to the litter box.