Electrical stimulation from the collar is intended to distract your dog by delivering an unpleasant but harmless electrical sensation. Some people describe this sensation as feeling like the static shock you receive when walking across a carpeted room in your stocking feet and touching a metal cabinet. Is it unpleasant? Yes. Does it cause you harm? No.
Training collars provide you with multiple stimulation levels. As a rule, most handlers find they can achieve their desired results using an extremely low level of stimulation, barely even perceptible to humans. Additionally, some remote training systems allow you to condition your dog to associate a vibration or audible tone with the correction, thus eliminating the need for electrical stimulation altogether. Not all remote trainers include a “vibrate-only” or “tone-only” mode. Review the features of each remote trainer when making your selection.