Can I also chime in with a warning/bit of advice? Suss out your dog's personality before considering going with that kind of physical deterrent. Stick it on the wrong type of dog and you could create more problems...
Yes. I've been going to dog training with my dogs for years and many of the "problems" are because the owners don't realise what they are doing. It REALLY helps to have an instructor who can point out to you things you are doing that you might not even realise you are doing. Much of formal...