Change your cat's litter less often and enjoy advanced odor control with Fresh Step Advanced Outstretch Long Lasting Clumping Litter (1). Formulated with Ammonia Block Technology, activated charcoal and the power of Febreze freshness, this Fresh Step cat litter fights 100% of litter odors (2) for 21 days of odor control guaranteed (3). Innovative ultra-absorbent microgranule technology forms smaller, tighter clumps that absorb 50% more and last 50% longer (1). With naturally strong clay plus built-in odor defense, Fresh Step clumping cat litter makes scooping and cleaning the kitty litter box a breeze and lets you change the litter box less often (1). One 16-lb. box of Advanced Fresh Step Outstretch litter lasts as long as 24 lbs. of Advanced Fresh Step Multi-Cat Litter. Enjoy more catnaps and cuddle time with your kitty when you choose Fresh Step litter. (1) vs. Fresh Step Multi-Cat (2) Ammonia and fecal malodor (3) See package for more information on terms and conditions