There’s no need to put up with endless barking. The GentleSpray Anti-Bark Collar gently and immediately conditions your dog to stop barking using a harmless burst of spray. The collar uses a microphone to pick up your dog’s bark, which triggers a harmless burst of spray. The spray distracts your dog from whatever he's barking at, letting you redirect your dog's attention. This spray collar is safe for all dogs, including puppies.