Dog whistles work well for calling dogs, especially from far away. Or you can use the whistle as a deterrent, blowing it when you want your dog to stop whatever he is doing without you having to yell.
If you want your dog to come when you blow the whistle, do not blow it when he or she is already next to you.Until the dog is familiar with what the whistle means
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”.
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Dog Dogs Or Puppy Pet Pets Adjustable Training Whistle,Great for recall over long distances.