hello,
the cases where you really need such a collar are very rare and normally you only need it in extrem cases of hunting or aggression problems.
There exists a newer collar that uses pressure air instead of an electric shock. In most dogs you get pretty good results with it, but it also should only be used by an experienced person, because on a sensible dog it´s pretty hard and you have to have a very good timing with all of these methods.
Ina
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