Thanks to its Smart Odour Shield technology, Odourlock ultra premium cat litter neutralizes urine and fecal odours for 40 days. Its patented technology blocks the formation of ammonia, which causes unpleasant odours. Ultra-fast clumping makes it easy to scoop and reduces the amount of litter used. This cat litter is also 99.9% dust-free, which is better for you and your cat’s respiratory systems!