Intersand Odourlock Intersand Odourlock is the only litter that neutralises unpleasant odours for up to 40 days! Its patented technology blocks the formation of ammonia. Ultra-fast clumping makes it easy to scoop and reduces the amount of litter used by over 45%. 99.9% dust-free, which is better for you and your catās respiratory systems. Leaves no tracking so your home will stay clean all the time. Made with 100% pure, natural clay. Available in Unscented, Baby Powder, Lavender and Calming Breeze fragrances.