Premium Cat Litter Trapper Mat with Double Layer Waterproof & Anti-Slip: This cat litter trapper looks like an open envelope because of its special double-layer design. It can effectively collect all the litter. The bottom layer of the upgraded waterproof mat is urine-proof, which protects your floors and carpets from cat urine. It will not be easy to move while cats step on it because of the anti-slip base. You can simply throw it away for recycling or wipe it with a damp cloth. Clean it under the sink or shower head. Vacuuming is also a good option.