The Ultimate 100% Clay Cat Litter The arrival of the new generation of clay cat litter that can be dissolved and flushed without clogging! This flushable clay cat litter does not compromise the clumping but instead has a better clumping effect by using different sizes of the granules between 1 – 3.5mm, smaller granules filled up the gaps to form a more solid clump that will not break when scoop. The superb clumping speed quickly form clumps and trap the bad odor, thus maintaining the freshness around your house and encouraging your cat to use the box.