Nullodor I use for several years in my breeding Burmese: 1kg per cat for a month, and no smell. Practical use with the litter box to roll on Demavic, almost automatic cleaning. 4 For cats, the big bag is handy especially really very economical! Amazon also thank you for the super fast delivery and well packed! (I save 16 / per bag compared to my pet shop and 10 from two well-known online pet stores)
