The static ‘correction' that a receiver collar gives your dog is not designed to cause him pain or harm. It's definitely not designed with the intention of injuring your little one. Rather, these ‘impulses' or stimuli are meant to be a bit uncomfortable and act more as a warning. You may like the sound of some of the fences we have reviewed, which use ‘graduated' warnings. These use audible tones, slightly starting noises or vibrations that your dog will hear or feel when he gets close to the fence. While he may feel a shock one or two times throughout his training, many dogs will quickly learn not to try again.
You may also want to be aware that customizable correction settings allow you to tailor the static impulse to accommodate for different doggy sizes. What is effective for a large dog may be too much for a little pooch, so read your instruction manual carefully, and always start on the lowest setting. It may also help to try the collar on your own arm, to get a sense of the static sensation.