WOW! This is a great! No more mess on my carpet. So big and plenty of room for my two cats. Now they can dig to China without making a huge mess for me to clean. I like how the front swings and opens so good for cats to come out, and it locks on great. Also, such a quick clean up in just minutes. When before I spent over 20 minutes cleaning my old litter box and floor as well. Thank you for such a wonderful item.