"Use this Purina Tidy Cats BREEZE With Ammonia Blocker cat pads refill pack to ensure your Tidy Cats BREEZE litter system (sold separately) is always ready to welcome your feline friends. Each pad quickly absorbs urine that passes through the BREEZE litter pellets, locking in moisture to keep the box dry and your cats comfortable. The pads are conveniently disposable to make cleanup easy, and the odor-controlling technology helps you maintain a fresh and clean smelling home. These cat pads for your litter box feature Ammonia Blocker, which is guaranteed to prevent ammonia odor for seven days for one cat, encouraging them to happily use their litter boxes. The innovative design makes installing and removing each pad an effortless process, so you can spend less time cleaning up after your cat family and more time enjoying your time with them. When used with the Tidy Cats BREEZE litter system, these refillable pads let you say ""goodbye"" to scooping clumps of urine."