Fresh Step has rebranded their Extreme Non-Clumping Clay Cat Litter bag, however it contains the same formula with the antimicrobial agent that inhibits the growth of odor causing bacteria on the litter. Now referred to as, Fresh Step Superior Odor Control Non-Clumping Clay Cat Litter, this high-quality, non-clumping clay quickly absorbs liquids and traps odors. It uses activated carbon that provide around the clock extreme odor neutralization. This carbon eliminates odors by trapping and filtering them out. A paw activated fragrance is released every time your cat uses the litter box, providing odor control as needed without being overpowering. This clay litter weighs 30% less than other clay cat litters, making it easier to handle when it is time to change the box. To refresh and maintain your litter box, every time you scoop just add more Fresh Step cat litter.