1.:Put all the cat litter bags on the litter box and throw out one each time you change them. Each filter has seventy-six filter holes with a diameter of 1.1 cm. The sand leaks out quickly, and the hidden pull strap will not trip the cat's feet 2.Easy to Clean:The litter box liners has a convenient drawstring handle and sand leakage hole. When preparing to replace, just lift the drawstring and leak the sand to save time and effort to throw away the garbage 3.Thick:It is made of thicker material with a thickness of 3.2 silk. No more urine or rubbish seeping into your trash can. The smooth surface is strong enough to withstand cute kitten paws 4.Seven Pcs:There are seven in a package, six pcs with filter holes, one pcs without filter holes. The cat litter is changed at least once a week, and the quantity is fully in line with the concept of changing the cat litter within seven days