2 Pack Dog Whistle, Dog Whistle to Stop Barking Neighbors Dog, Adjustable Ultrasonic Silent Dog Whistle, Professional Recall Dog Training Whistles, with Lanyard

How to train your dog with dog whistle:

Prepare some treats, lead your dog to a lawn, or somewhere quiet.
Adjust the pitch and blow the whistle to train your dog, continue testing until your dog responds.
Notice your dog's reaction to each setting until your dog exhibits the strongest reaction.
It is best to train 5-6 times per session, reward your dog with a treat If it responds positively.5
Some tips: "Don't move" ------- Two short sounds, "Sit down"--------- one long and one short, "Over"--------- Two long sounds.
For example :
When teaching the sit-down action, first play the flute according to the prescribed method, then hold the dog's buttock with your hand and let him sit down. In this way, repeat the training. Later, when the flute is played, the dog will sit down by himself.