All Fresh Step Scoopable litters now have granules containing odor-eliminating carbon to continuously neutralize odors and help keep your house fresh. These granules work like a sponge to actually absorb odors. Every granule contains encapsulated fresheners that are activated when your cat scratches or steps for immediate odor control and a light, fresh scent. In addition, we use an anti-microbial agent to help stop the growth of odor-causing bacteria in the litter before it starts. Our new, patented formula is just as clean and safe for your cat and home as the previous formula.