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Review title: worked at 1st then decided to stop
Product review: When I received this in the mail, I bought batteries and put it near by doorway. It definitely worked and you would hear it make a slight buzzing sound every time it went off and a ready light would go off instead of the green light that was normally on. My roommate event set it off when she was talking really loudly! The dogs looked at it mysteriously then stopped barking. After a week or two it stopped working, It would light up red still but the same slight buzzing sound wasn't going off anymore. I took the battery out, put it back in and no luck. Unfortunately I didn't return it in time so now i'm stuck with a piece of plastic that lights up red and doesnt do anything for the dogs barking! So it worked, just not for long. I wouldn't purchase it! Save yourself the $20 and get one that actually works consistently.
