Cat's Best Original uses the power of technologically refined active wood fibres as a clumping litter. These are manufactured using the new ICS Wood Fibre Technology process. Liquids and odours are absorbed particularly effectively and encapsulated deep inside – up to 7 times their weight. Therefore Cat's Best Original can remain in the litter box for up to 7 weeks before a complete change is necessary. No trees are felled for Cat's Best because Cat's Best is made from sustainable, PEFC certified secondary wood raw materials from the timber industry. Unlike mineral cat litter, Cat's Best uses short transport routes, is much more economical in use and is completely biodegradable. Comes in 13 kg.