The PetSafe Indoor Ultrasonic Bark Control System offers a humane and effective way to manage your dog's excessive barking indoors. This stationary device automatically emits an ultrasonic sound that only dogs can hear when they bark. This sound is designed to be disruptive and discourages barking. No collar is needed. The system is designed to work up to a range of 25 feet. It's a convenient solution for pet owners seeking a no-collar-required bark control method. The PetSafe Indoor Ultrasonic Bark Control System is lightweight and can be placed on a tabletop or other surface. Here's why you'll love the PetSafe Indoor Ultrasonic Bark Control System: * **Humane Bark Control:** Uses ultrasonic sound to deter barking. * **No Collar Needed:** A convenient, collar-free solution. * **Automatic Activation:** Automatically detects and responds to barking. * **Up to 25 ft Range:** Effective within a 25-foot radius. * **Lightweight and Portable:** Easy to place in any room. * **Manual Trainer Button:** Allows manual activation for training purposes.