Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Horrible NARROW contraption...

When our cat first started using this, I really liked the concept. Now, I realize the actual space inside for the cat is far too narrow for my cat. He sprays everything back up against the back corner and the clumping litter gets stuck on the grill and back wall and it is a real mess. Not all the used litter gets "thrown over" to the collection box, which covers half of the inside of the box, so you have to do it multiple times and I still have to use the scoop and then end up having litter spilled, as the opening is too small to manuever a scoop thru. we're going back to the top opening litterbox...less tracked litter too.