~Available in 5L, 10L, 20L & 40L The clumping litter that traps and absorbs odours permanently. As a clumping litter, Cat's Best Original makes use of the power of refined active wood fibres; these effectively absorb liquids and odours and trap them deep inside – up to seven times their own weight.This neutralises odours so effectively, that the cat litter can remain in the litter tray for up to seven weeks. Cat’s Best Original functions best when you regularly dispose of the solid excretions and clumps that form after the cat has used the litter tray – using an original Cat’s Best cat litter shovel, which contains just the right hole spacing for the grain size. This saves time and costs and ensures the type of hygiene and comfort that cats prefer. Cat’s Best Original is made exclusively of renewable raw materials, which means it is both sustainable and biodegradable.The Cat's Best Oko Plus ECO Clumping Cat Litter is 100%% biodegradable and the most absorbent clumping litter on the market, with the phenomenal feature that waste clumps can be disposed of in the household toilet!