Bentonite is a clay derived from hydrothermal alteration of volcanic ashes. Bentonites can be found of various colours: white, grey, pink, brown and red. This versatile material is known since ancient times and used nowadays for many different applications including cosmetics, clarification of wines and fruit juices, and also pharmaceutical products. Coming to cat litters, this special white bentonite is used for its pleasant appearance and for its exceptional capability to absorb liquids up to three times its own weight. Liquids and odours are restrained in clumps easy to remove leaving the remaining product intact for further use. For its special characteristics in terms of visual aspect and quality of performances the white cat litter is widely recognised as one of the most precious.