PetSafe Indoor Ultrasonic Bark Control

This tabletop device automatically stops your dogs nuisance barking, no collar required. You can restore peace and quiet in your home by simply placing the Indoor Bark Control on a table or counter in the room where your dog barks the most. Then, whenever your dog barks, he will hear a 2-second ultrasonic tone to discourage him from barking. You can set the unit to go off automatically every time your dog barks, or you can manually press a button to activate the tone sound. After consistent training, your dog should bark less within only 2 weeks.