This application contains 3 most effective frequencies: 11 kHz, 15 kHz and 20 kHz. Each sound frighten dogs. Anti Dog Repellent + looks good and is easy to use.
This application does not work on all breeds of dogs. Its effectiveness depends on the nature of the dog and other factors.
It works like dog whistle.
IMPORTANT: Use at your risk because some dogs may become agressive. In that case turn off the application and calmly leave the area. During that do not look into the eyes of a dog.
IMPORTANT: Don't provoke dogs!