Cat people, meet the EziLockOdour Dual Layer Cat Litter System. This supersmart system makes cleaning up after your cat easy as one, two, three.Step one is the EziLockOdour Dual Layer Litter Tray itself. Step two? EziLockOdours clever Natural Zeolite Pellet Cat Litter Pellets. And step three is the EziLockOdour absorbent pad, which sits underneath the litter.Thats all there is to it. Just scoop the solid clumps from your cats litter tray, replace the litter once a month and the absorbent pad once a week!