"We have two cats, Theo and Tucker. Theo always uses the litterbox but does not cover his waste. As a result, the room where the litterbox is kept always smells, and the smell works its way to our family room. Yuck!! Tucker will not use a litterbox that isn't clean, so once Theo uses it, Tucker will go on the floor all over our house. The thought of getting rid of him was heartbreaking, so we set out to find a solution. Our first reaction when we saw this product was they must be crazy to charge so much. But in reading the reviews, we could not find a single bad review, unlike the other cheaper products, so we decided to try it. It is the best money we've ever spent. We have never, ever smelled anything, even when standing right next to the box. Tucker has not had a single accident. They both took to the new box immediately. I simply followed the instructions for getting your cat used to it. Honestly, we would pay twice as much for this product. That's how great it is. It's like the litterbox doesn't even exist! Oh, and we only have to empty the drawer about once a week, and that's with two cats!!"