Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cute but useless

I returned this product because it did not perform as advertised. Its movement on the pool floor was not in concentric circles and from time to time it would simply hover, suspended an inch or two above the pool floor, unable to remove anything. In order to have a clean pool, additional hand vacuuming is required. This might be ok for a very small pool, but seemed to "get lost" in my large one.