The box stayed clean the whole month it was easy to scoop and no debris left on the box itself stayed clean, no odor, no scrubbing plastic boxes with scratches the three boxes have no scratches and it’s been a month. later I toss and I get new boxes! I use dust free litter I use cloud control. The boxes are strong and durable my 14 pound cat uses the standard and the box holds him up because he likes to stand on the top part. I have three cats, three boxes. My picky, scaredy cat bengal uses the boxes.