Herbal Cat  Litter by Vetbasis is made in America from ground corn cobs, is clumping, long lasting, dust free, and offers superb odor control. It is eco-friendly, and manufactured with environmental sustainability in mind. It does not form hard clumps on a cat's feet, nor does it stick to the box. Many of their customers even report flushing the litter.  With regular scooping, the litter will stay clean and it is not necessary to change it unless a cat is ill or the owner prefers to freshen the box with a new bag.