Brit Fresh for Cats Excellent is ultra bentonite clumping cat litter ideal for cats’ sensitive paws. Thanks to its fine structure and small particles of 0.5-2mm, ultra bentonite is extremely pleasant and desirable for cats. Fine grains are ideal for their sensitive paws and create a perfect dust-free and natural environment for cats to relieve themselves. Bentonite’s excellent absorbency provides 100% control of liquids and odors. Perfect absorption and locking the liquid inside the clumps prevents the proliferation of bacteria.