Our rescue pup barks at literally everything so we bought this collar to control his barking. We did find that it works well as long as you are consistent as to when you click the remote to refocus his attention. We did not use the "shock" feature, only the vibration and sound. It's going to take some time to get him to stop barking at everything that drives past the house, but, we feel confident that, if we are persistent, we will achieve our goal.