I bought this solely as a way to keep my dog from getting into the cat litter box. The bonus is that it looks good! The instructions were VERY easy to follow. Each part was labeled clearly. It even came with extra fasteners as well as a small Phillips screwdriver and Alan wrench. I did need to get a lower litter box so the cats could climb into it  from the inner back entrance more easily. (You don’t need anything unusual. It’s just that I had a taller sided litter box to keep the cats from throwing litter out previously.) The price was great too!