Deliver powerful odour control to your cat's litter box with Tidy Cats Free & Clean Unscented lightweight cat litter with Ammonia Blocker. This cat litter is free from fragrances and dyes, giving you an unscented litter option to meet your and your cat's unique preferences. Activated charcoal absorbs odours on contact, while Ammonia Blocker prevents ammonia odour for 14 days when used as directed, helping to keep your home smelling fresh and clean.