Quiel was not the head of my dog once it colllier around the neck !! After two or three of my neighbors use semaien pleased to have been controlling his barking Henceforth it aside but always carry hand for outputs.
Only small problem, does it really come from the collar or not, there heat at the contact with the stroke of my dog which had the effect of bringing down his hair since that repulse but we see that there has less than before