Catsan Ultra Clumping Cat Litter is a high quality natural clay granules.This is a specialised mixture thats small but mighty. Each granule of Catsan Clumping clay has thousands of micropores, giving it a very strong absorbency power. The litter acts like a sponge to quickly bind large quantities of liquid before bacteria and odours develop.Any soiled granules will clump together, which makes removing waste easy and extremely efficient.Its so effective that Catsan Ultra Clumping Cat Litter is 3 times better at inhibiting bacteria growth than other conventional lightweight litters. So each 5 litre bag will last much longer with no smells and less dust.