Made with natural clay and mineral product plus deodorizing system. 99.9% dust free. Powerful odor control. Instant Action - immediate odor control. America's no. 1 litter brand based on sales. Backed by 70 years of litter expertise. Our history began when Ed Lowe invented litter in 1947, and reinventing litter has been our focus ever since. Combining our liter expertise with everything we learn from you, we're proud to keep growing our innovative portfolio of litter products. Purina: Your pet, our passion. Quick-release deodorizing system ensures immediate odor control. Absorbency & Clumping in Every Light Weight Granule: Clumping power; Absorption power; Deodorizing system; Bright outdoors scent. Less weight, not less litter. Same use as 20 lbs. 8.5 lbs Tidy Cats LightWeight = 20 lbs Leading Clumping Litter.