Walmart has ARM & HAMMER Double Duty Cat Litter Deodorizer and Pet Odor Eliminator, 33 oz Box for $4.33. Shipping is usually free to Walmart+ members or on orders over $35.

About this product:

The extra strength formula of ARM & HAMMER™ Cat Litter Deodorizer Double Duty destroys feces and urine litter box odors on contact. As the #1 cat litter deodorizer brand*, 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 every time your cat uses the litter box. In fact, internal lab tests demonstrate that it lowers odor levels after 9 days compared to clay, scoopable or natural—scented or unscented—cat litter alone. Use absorbent ARM & HAMMER Cat Litter Deodorizer Double Duty regularly to help prevent litter clumps from sticking to the box. This 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 any type of cat litter—scented, unscented, clay, scoopable, or natural. 33 oz box of Double Duty litter deodorizer. *Based on Units Sold, Nielsen Total U.S. AOC, L52wks ending 06/05/21