ökocat Natural Wood Clumping Litter offers the best performance in the natural litter class. Free from chemicals, dyes and other synthetics, its soft ground pellets have been lab-tested and proven to absorb more than 5X their weight in liquid and control odor for 7 days. Its superior clumping and absorption power forms firm clumps and controls odors for 7 days. ökocat litter is biodegradable for flushable disposal, and is naturally lightweight. All litters come in a smart, compostable package with an easy-to-carry handle and pour spout.