Enjoy your dog's company in peace and quiet. Petsafe - Elite Little Dog Bark Control is a small unit that uses vibration and sound to ensure only your dog's barking is detected. As he barks, he receives a safe but annoying static correction. The bark collar begins with low corrections, but if excessive barking continues the correction intensity will increase. When used correctly the bark collar reduces (and in most cases eliminates) the number of nuisance barks.