The Dr. Elsey’s Senior Cat Litter absorbs urine and odor on contact and traps it inside the crystals to keep cats clean and help prevent urinary tract infections as well as kidney failure. The small particle size and fine dust also coats and dehydrates solid waste to reduce odor. This litter is 100% non-toxic, hypo-allergenic and biodegrable. Contains no wheat, pine, corn or paper litters. 8 lbs