99.9% DUST FREE: Dust removal is an important part of the Ultra production process, so your litter box and room stay dust-free and clean SUPER SOFT ON PAWS: Silica Gel Micro Crystals provide maximum comfort on cats' paws GENTLENESS ASSURED: Silica Gel Crystals are non-toxic and safe for pets and people; the unscented crystals are great for sensitive cats MAXIMUM ODOR CONTROL: Ultra is #1 in odor control; see package for details LONG LASTING: Litter stays fresher longer; great in single and multiple cat settings