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Title: what happened to this product???
Review: I bought two of these a couple of years ago and they have been awesome. I bought two more recently and they worked great for about a week and then gegan only working about 1 out of every 10 ten times something entered their path, including me walking by or my kids playing right in front of them. I changed batterys a number of times, cleaned out everything I could and nothing. Also these two new ones leak a lot. I get the leaks to stop and then within a day or two there is another leak. really disappointed.
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