Up to your puppy, continue checking benefits up. Then you'll know that you have reached a frequency that he can hear.
Use the dog whistle with varying sequences to train your dog. For example, one long burst can mean 'come,' while a series of short, staccato bursts might mean 'sit.' Keep your whistle commands consistent and your dog will always know what you expect of him. The dog's behavior according to your instruction needs to be trained. Such as, at mealtime, blow on the whistle before they get the food. It will only take a few times of doing this and your dog will react quickly.
Brand Name: Peitten
Item Type: Dog Whistles
Model Number: Obedience Whistle
Material: Stainless Steel
Type: Dogs supersonic
Sales Way: Wholesale & Retail supersonic
Length: 8cm supersonic
Diameter: 0.8cm supersonic
Feature: Dog Training Whistle supersonic
Salesway: Retail & wholesale supersonic