Arm & Hammer 20 oz. Cat Litter Deodorizer with Baking Soda. This odor-absorbing boost to your regular litter effectively neutralizes unpleasant smells, keeping your home fresh and odor-free. Its moisture-activated fragrance prevents soiled litter from sticking to the bottom of the litter pan, making cleaning a breeze. Simply sprinkle it in daily or when changing the litter, and let the baking soda work its magic to destroy odors.