Guaranteed litter box use... or your money back! Precious Cat Ultra Litter Attractant contains a scent that naturally cats to use the litter box. It was created through years of observing shelters and in Dr. Elsey's clinic. Industry statistics show that non- box is the number one behavioral reason cats are abandoned, abused, animal shelters. Designed for cats who are not using their litter boxes, Ultra Litter Attractant is the first litter attractant to specifically address and provide a clinically tested and consumer proven solution.