Cats Best OkoPlus organic clumping cat litter is made from a sustainable source of Spruce and Fir timber Total odour control liquids are absorbed on contact via the capillary system of fibres in each granule effectively trapping odours More economical and efficient the basic litter contents can remain in the litter tray for up to 4-6 weeks with 1 litre lasting 1 adult cat 1 week OkoPlus is both 100% compostable and biodegradable and can be disposed of in the composter