These are the best disposable litter boxes I've ever used. They are perfect for our many litters of foster kittens. With a low entry option on one end and high sides, these boxes help keep the litter inside the box, even when the kittens are just learning how to use it - and occasionally playing in it! It even works well for non-clumping litter for the littlest kittens, especially when you insert one of the multi-purpose pads Cats Desire sells. They hold up for weeks at a time and I never have to worry about sanitizing because I simply fold it up into it's clever closed form and carry it by the handles to the garbage. I was a big fan of another national brand's disposable jumbo boxes, but when they stopped making them I needed to find something new - and when I found Cat's Desire I knew that they are much better than the national brand ever was. And if you're a nerd like me, you'll be geeking out over their no waste, no adhesive, flat storage cardboard design. Top that off with a responsive and very kind staff and they have my business for life! Try them out and say goodbye to your litter box sanitizing days! Thank you Cats Desire!