Instruct: Classify the given Amazon review as either positive or negative.
Query: What did they do to the new models?

I bought my first Littermaid a long time ago and it worked well for almost ten years. When it finally broke I didn't have a second thought about buying a new one because it was so convenient to have. I bought the first replacement and it died within a month. I got a replacement for that and within a couple of months it stopped working automatically, meaning it won't shut off by itself. I am completely dissatisfied with this machine. I see it is made in China. I wonder if the company is now making its product cheaper. Something certainly has changed because it is no longer a useful piece of equipment. I wouldn't recommend it unless there is indication the company is taking more interest in quality control. Obviously its possible to make one of these machines that works because in the early days of the company they built one that lasted.