... pollution 3.strong clumping ,easily scoop bentonite cat litter is also called clay cat litter, kitty litter or cat sand ,it is made of bentonite which ... ,non-poisonous,dust-free,the best material to make the cat litter,it has the advantage to adsorb extrement ,urine and serious ... 9%water adsorption rate :150%pellets density:0.75g/cm3 crystal cat litter 4.0L