Pet Dog Repeller Anti Barking Stop Bark Training Device Trainer

The Following Conditions May Lead Poor Effect of Banishing Dog:
1. Your own dog, because the dog knows that his owner will not hurt him.
2. In noisy environment, such as the downtown or the street.
3. A well-trained dog.
4. When the battery voltage is low.
5. The dog listen ultrasound too much, has become accustomed to it and doesn’t fear.