My cat Mr. T made my life crazy tracking litter everywhere in spite of the rug I kept under his litter box. On hardwood floors it is disgusting and I vacuumed every day but it wasn't enough. My friend has 10 cats and they clean the 2 litter boxes 3 times a day but tracked litter was everywhere. I decided to fix this problem for both of us. There is still an occasional piece of litter, but the tray has dramatically reduced the mess. She warned me one of her kitties always pees on a new carpet pieces she puts under the boxes, and sure enough he did on this tray too, but she said it cleaned easily by rinsing under the faucet in the tub. I noticed quite a pile of litter on my cats tray when I was going out the door, no time to clean then so I just lifted the edge and it rolled back by the box till I could get time to clean things up. Life is much easier now.