Punishment Are Ultrasonic Dog Training Devices Really Safe and Humane? These popular training devices may spell trouble for dogs. Posted January 13, 2020 | Reviewed by Ekua Hagan ...

10-Level Variable Dog Bark Deterrent Hands-Free Pest Repeller 18 E-Whistle Sound PawBehave launches the world’s first adjustable ultrasonic dog trainer and pest repeller, offering humane ...

To teach the dog to stay in line, the Tug-Preventing Dog Trainer attaches between the leash and collar and will emit an ultrasonic tone whenever the dog pulls on the leash.