Negative Positive
Title: Good and inexpensive
Review: I was a bit skeptical if such an inexpensive device would work on the dogs across the fence from me, but I'll have to say that after the first couple of times using this device when they barked, their behaviors are certainly changing; ie, they are going to the other side of the yard to bark instead of into my window. Now, I consider myself to be a stealth ninja sonic warrior. : It's been money well spent!
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