I wish that I had looked a little closer at what each package included. I originally bought the tabby package and added on the domed lid and side-walls. This package is great and would have saved me money, but either way it was money well spent! I haven't scooped cat little in over a year and a half. This is a must have for cat lovers. It made me enjoy my pets so much more!! It is pricey but you end up saving money on cat litter. It ends up paying for itself.