NWT Premium Cat Litter Trapping Mat Double-Layer Design, Waterproof Easy to Clean, Scatter Control Black 25.6" x 17.7" x 0.3" Color: Black 2-layer “honeycomb" top layer that lets litter slide in through the holes and trap it on the bottom. To empty it, simply spread either end of the two layers apart and let the debris fall into the trash or quickly reuse in the litter box with little to no mess. The litter mats are waterproof in case of accidents Wash the mat with water or use vacuum