Instruct: Classify Amazon reviews into positive or negative sentiment
Query: big, but it works

i saw a video for this product online. the price was a shock, but im at the point with my cat that i was willing to try anything. the original posts that i had read about the litter robot said that it would eliminate the small of your cat from the house, and i must say it has cut down on the smell a lot. but it doesn't not get rid of everything. it does still have a faint smell, that may only be noticeable to non-cat owners.the box was HUGE! and i could barley get it through the door! but then again the whole thing is huge!! and my cat didn't want to use it for about a week, but if you follow the helpful instruction that come with it, you should have your cat using it in no time! over all it was totally worth the high price and im glad i bought it, but i just wish i was a small size, and i think having to re-locate the litter box in general was a unwanted change for my cat. so i would say that if you were to buy it, make sure you have enough space!