21lb Sanicat Extreme Clumping with Baking Soda Cat Litter – Made in the USA, Sanicat Extreme Clumping with Baking Soda litter is made of natural Sodium Bentonite clay which features the ultimate clumpability. Fragrance-free, this high performance blend helps control strong litter box odors. Low dust, low tracking Sodium Bentonite clay helps naturally trap smells for up to 30 days. Helps control odor-causing bacteria. Quickly forms hard, easy-to-scoop clumps. Absorbs fully and quickly. All-natural clay is low dust and low tracking. Made in the USA.