How can I use dog whistle training to effectively stop my dog from barking excessively?

To effectively stop your dog from barking excessively using dog whistle training, start by selecting a dog whistle with a frequency that is not audible to humans. When your dog barks excessively, blow the whistle and give a command like "quiet" or "stop." Repeat this process consistently so your dog associates the whistle with stopping barking. Reward your dog with treats or praise when they stop barking in response to the whistle. Be patient and consistent with the training to see results.