This Guardian Anti-Bark Collar is an excellent training tool for your overly vocal pooch. It is simple to use and fits comfortably over your dog’s neck loosely, yet is tight enough so that it will not slip off. The dog barking collar tool “feels” and “hears” your dog’s bark and gives a static correction as a behavior reminder to stop barking. Correction starts with a mild tingle and safely increases if your pet continues to bark. This waterproof bark collar features a lightweight design that your dog will barely notice and is an excellent, humane tool for helping your dog to break its bad habit in no time.