Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great product! Wow!

This thing is great. Easy to put together. Super easy to use. I was surprised that I only cleaned a portion of the room and had to refill the tank, but otherwise it was truly amazing. I have 2 dogs, and our off-white carpet was costing me a fortune to have professionally cleaned, so I bought this thing and it paid for itself in ONE using. The carpet looked as good as when the dude came and did my carpets. I shopped on line for extra cleaning solution, so I'll always have enough at a reasonable price.