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Arm & Hammer Double Duty is a clumping clay litter sold in a 29 lb box. It pairs a clumping clay base with baking soda and a deodorizing additive, so it targets odor control as much as scooping. It suits multi-cat homes and owners who want a low-fuss, widely available litter. Against premium crystal or plant-based litters it clumps firmly and controls odor well, but it is heavier, dustier and tracks more than those alternatives.
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Lowest price we've seen: $17.99 on Nov 10 at Petco. Tracked across 1 store since Nov 10.
Owners generally rate Double Duty as a solid, affordable clumping litter that holds odor down better than plain clay. Complaints center on dust and tracking, and some cats dislike the added scent.
