The PetSafe Outdoor Ultrasonic Bark Control Birdhouse PBC00-11216 is a device designed to stop dogs from barking by emitting ultrasonic frequencies. It is waterproof and has a range of up to 50 feet. The birdhouse design makes it easy to surround your yard with protection against barking dogs. It is suitable for various dog sizes and comes with a one-year warranty. This product is an effective solution for controlling your dog's barking behavior in an outdoor setting.