Product Information Envelope design. Ends of the rug are closed, leaving the top open like an envelope. You don’t have to worry about litter falling from one side to the floor when trying to pick up the mat to throw extra litter into the litter box. Efficient honeycomb design With the soft honeycomb design and the structured surface, the waste grains are easily caught by the paws. They fall through the second layer instead of being pushed onto the ground. Save time on cleaning. The mat is safe and durable. Intelligent and effective cleaning support. Cats walk on the mat and the cat litter falls through the holes, the litter is trapped between the top layer and the top layer of the bottom layer. Waterproof design. Waterproof base layer prevents urine from touching the floor - for really messy cats, puppy pads should be used as they will absorb excess urine - avoid urine around the nylon net on the edge of the mat. This outer rim can absorb urine if it is excessive. Read More