I had this litter box for almost a year now and thought its time for me to give it a review.First of all, the quality is nice and very sturdy and not made with some cheap plastic material. It is probably the most expensive non-automatic litter box out there but definitely worth the price for me. I tried to save some money in the past and brought other litter box in the 20-80 dollars range and they all have some problems. This one has NONE (except for the hooks which I'll talk about later). It is really the last litter box you'll ever need to buy.My cat is a 15lb Ragdoll and my boyfriend and I have tried about 5-6 litter box/tray. We tried some other XL size top entry litter boxes and they are just NOT BIG ENOUGH. The bottom side is always smaller than the top opening side, and the round or oval shape of those litter box means that they are not as big as they claimed. Litter pans/trays can be big enough, but you will have to deal with the smells and you will have to clean up the litters on the floor. This is really the ONLY litter box that is big enough and minimizes litter tracking on the floor.The Liner:I LOVE the liner design! All I have to do is unhook the liner, pour out the remaining litter, and wash/wipe the liner. The liner is very durable. The manufacture's website says they are good to use for up the 3 months. However, the liner has been on backorder and out of stock fairly frequently so I had to keep reusing it for the past 9 month and IT IS STILL IN GOOD SHAPE. The liner finally has stocks in last week so I purchased it, but I could have continue to use the old one without a problem.The only issue I have is the hook that attaches the liner to the conner of the litter box. It does NOT lock. So when my cat scratches the liner after he poops or pees trying to bury his waste, the hook would come out. I fixed by taping it to the litter box. It did the trick but still would appreciate if there is some sort of locking for the hooks.Again, Love it! Buy it! Especially if you have big cat!