Dealing with the Noisy Neighbor's Dog: A Simple Solution
Dog barking can be a real nuisance. Here’s how to stop it when dogs are nearby.

Dog barking can be quite a nuisance if you live in shared apartment buildings or in neighborhoods with private homes.
Many are not aware of this trick, but those who know can attest to its effectiveness. It involves an ultrasonic frequency—a sound undetectable by humans but audible to dogs. This frequency is often used to 'calm' working dogs like police and military dogs.
Dog trainers typically use this frequency to correct unwanted behaviors in dogs they train, such as barking, jumping on people, digging in the yard, destroying furniture, and even aggressiveness towards other dogs.
There are devices available on the market that often include a built-in LED flashlight and a button that can be adjusted to additional frequencies that dogs dislike. The result? Dogs that stop barking in the middle of the night or just as you’ve put the baby to sleep, 'calmed' dogs that refrain from digging, destroying, or jumping and attacking others, and any other behavior you find objectionable.
Here’s an example of one of these devices: