Dog Whistle Professional is different from other programs because it has lots of frequency.
Dog whistle tested on many dogs and results are successful.
Do you want to train your dog?
Do you want to irriate certain dog?
Do you want to scare them?
If your answer is yes, Dog Whistle Professional is a right choice for you.
Because Dog Whistle Professional has high frequency sounds which aren't heard by human ears but dogs can hear these sounds.
Dog Whistle Professional contains different frequency: From 22.000hz to 42.000hz.
You can open one of frequency or you can open all of them.
Also, there is different programs.
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