The ScoopFree litter box is a game changer! Picking up litter is always smelly and gross and this simplifies the process and makes it more manageable. What you're purchasing is actually a plastic lid that sits on top of the disposable cardbox box, but it's so much more than just a lid! I love the raking mechanism and the way it pushes the waste into the reservoir underneath the plastic hood. Traditional litter, both clumping and non-clumping will not work with this because it gums up the rake. Which is nice since the litter it comes with is pricey.