I don't use one but a friend of mine is a police dog handler. He uses one. He said you have make them wear the collar a long time before you first shock them, this way they have no idea where it is coming from. Even then you have to be very selective on how you use it.
I met a family who had a V and they used one to keep the dog on a very small property. Even on maximum shock it would still get up the gumption to run thru the barrier if something really got its attention. Seemed to me that the dog was very anxious and I reckon this would be because of regular shock treatment.
Better to put in lots of training when they are young (like EVERY day) and put up a fence.
I met a family who had a V and they used one to keep the dog on a very small property. Even on maximum shock it would still get up the gumption to run thru the barrier if something really got its attention. Seemed to me that the dog was very anxious and I reckon this would be because of regular shock treatment.
Better to put in lots of training when they are young (like EVERY day) and put up a fence.