World's Best Multi-Cat Unscented Clumping Corn Cat Litter, 15-lb bag; Say goodbye to mediocre clay pellets and hello to the World's Best Cat Litter. This powerful litter instantaneously traps odors left behind by your feline friend, and forms tight, easy-to-scoop clumps on contact. That means you can spare your home from that foul ammonia smell and cleanup becomes a breeze! A natural, compressed corn formula is completely free of silica dust, so you and your family can breathe easy. This 99% dust-free litter won't disturb your pouring with a dusty cloud! Plus, this formula is environmentally friendly—totally flushable, and safe for both septic and sewer systems. Feel good about what's in your litter box with this pet, people and planet friendly litter.