The Eiiel Large Litter Box with Odor Control Carbon Filter is perfect for medium and large cats. The box features a charcoal filter for the dome that absorbs unwanted smell so it can be placed in any room of your home. The box also has a patented grated doorway that keeps your litter in the box instead of on your floor. The box is made from high-quality plastic that is odor and stain resistant. The box is easy to clean with both regular and baking soda.