Biokats diamond care classic cat litter is a clumping cat litter made from natural clay that uses activated carbon and natural coconut shell fibres for highly effective odour binding activated carbon is a highly porous carbon compound with a huge inner surface area one gram of activated carbon would measure around 1 000 sqm if unfolded this in combination with physical forces keeps odours effectively locked up the natural raw materials come from coconut shells which are a renewable sour