This is ultrasound dog whistle - teach your dog better behavior and some cool tricks. Show your dog that barking is bad!
This application contains 8 frequencies: 5 kHz, 6 kHz, 7 kHz, 8 kHz to get your dog''s attention and 11 kHz, 13 kHz, 15 kHz, 18 kHz to punish your dog for bad behavior.
You can use dog whistle as a dog trainer.
Important: Don''t provoke other dogs.