I was skeptical at first, but the Dog Repeller Portable Ultrasonic Deterrent Handheld Anti-barking 3in1 Dog Training Device Repel Animals Pets Dog Trainer really works! My dog used to bark excessively at the mailman, but a quick, gentle ultrasonic pulse from this device has calmed him right down. It's also great for stopping him from jumping on guests.

This is my second purchase of this product, I loved the first one so much. It's a humane way to manage unwanted barking and keep my dog focused during training sessions. The built-in flashlight is a handy bonus for evening walks.

The portability of this device is fantastic. I can easily slip it into my pocket or bag when we go to the park. It has helped curb my dog's chasing squirrels instinct without any harsh methods. Highly recommend the Dog Repeller Portable Ultrasonic Deterrent Handheld Anti-barking 3in1 Dog Training Device Repel Animals Pets Dog Trainer!

I've tried other training methods with little success. This ultrasonic trainer is different. It's effective for deterring my dog from digging in the garden. It's simple to operate and seems to be making a positive difference in his behavior.

The Dog Repeller Portable Ultrasonic Deterrent Handheld Anti-barking 3in1 Dog Training Device Repel Animals Pets Dog Trainer is a lifesaver! My neighbor's dog was constantly barking, and this helped deter it when I was walking by. It's also useful for keeping stray animals away from my property. Very pleased with this purchase.

I was a bit worried about using an ultrasonic device, but this one is very gentle. It doesn't seem to distress my dog, but it effectively stops him from jumping on furniture. The battery life is decent, and it's easy to recharge (though battery not included, as noted).