Instruct: Classify an Amazon review into positive or negative sentiment.
Query: a difficult machine

I had trouble with my Scooba from Day one, 11 months ago but kept working with their customer service to try to get it to work. I've had to make many telephone calls to customer service, but finally got help from an unofficial WEB site. If you enjoy fiddling with technology this might work for you, but although it does a fine job cleaning when it is working properly, it has not been easy to get it to do so.It is a lot of money for what you get.I just received a replacement Scooba. Same problems as the first about not putting water on the floor. I'm going to look at the IRobot WEB site to try to get some help on this.