Improved! Made of 95% of the clumping clay formula with 5% Zeolite added for extra, natural odor control. Zeolite is a bright white clay with a special molecular structure that's effective at trapping toxins and odors. Zeolite is so safe, it's used to purify water. No dyes, scents or other chemicals are added or needed. Same great price as our classic Integrity Multicat.