Citrus Magic Odor Control Litter Paws use the same odor eliminating formula found in Citrus Magic Solid Odor Absorbers, and puts them to use directly into your cat's litter box. Controlling foul odors in your cat’s litterbox is easier than ever. Simply remove a Paw, reseal the pack, place the Paw into your litter box, and you are good for up to 7 days of 'round the clock freshness and odor control. These odor control Paws are pet-friendly, and are a simple, convenient way to prevent litter odor. They are so effective that they even work when you have multiple cats. Citrus Magic has created a line of pet odor eliminating products that promote a safe, yet effective, alternative to using harsh chemicals around those beloved members of any family.