This small granule natural clay clumping litter from greenwoods has an effective fast clumping action and is extremely absorbent greenwoods natural clay clumping cat litter is made from canadian natural clay with green zeolite a natural mineral crystal with a complex structure which locks in bacteria and odour at greenwoods your pets well being is the highest priority the greenwoods natural clay clumping cat litter with zeolite can absorb up to 320 of its original volume it is 4 times m