With odor eliminating carbon for maximum odor control. Works better to eliminate odors than the leading Scoopable litter. Fresh Step Scoopable Litter has granulates containing odor eliminating carbon to help keep odors from leaving the box. This formula has carbon inside the granules. The carbon helps eliminate odors on contact, so odors are neutralized before they leave the box. Carbon is used as a freshening ingredient in many household items you may already use, including; water filters, air filters, fish tank filters. This patented formula has the cat activated fresheners and the clump strength you except from Fresh Step Scoopable litter. It is clean and safe for use by your cat.