Sonic collars utilize sound as a deterrent to deliver a high-pitched screech that is quite uncomfortable to a dog’s sensitive hearing and is heard by humans. This setting is usually adjustable, to minimize the collar’s response to common nearby sounds other than barking. People who dislike shock collars are much more tollerant of Sonic Bark Collars, as they are less harsh. One of the prime disadvantages is that any other dog nearby will also activate Sonic Bark Collars.
Dogs can become conditioned to the sound and learn to ignore!