They advertise the "Dazer" as being totally harmless,just sends out a frequency that is puzzling and gets the dogs attentionThey are also used for training.I was only wondering if they work because there are a couple of good sized dogs on a road that we walk that approach in an aggresive manner......so far,avoiding eye contact and ignoring them has worked but my wife walks alone some days and it might be good to be prepared.
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