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Title: Buyer beware!
Review: I have owned for over two years and it has only worked about 5 or 6 times during that period. When it works, it takes so many attempts and so much work that I could mop the floor manually in less time. There are always error messages that cause so much frustation.We have also owned 3 Roombas that have each worked for a short time but eventually fail. The maintenance required and the expensive battery replacements negate the positive benefits of these robots.The concept is good but the engineering is faulty.
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