The Bark Begone is not a normal dog whistle. It can not only curb unwanted behavior through sound, but through sight as well with the built-in flashlight. ... It's a more aggressive and louder sound that would be used to ward off aggressive dogs or nuisance animals.

Does bark Begone actually work?

It works! My Bark Begone device works! After only using it a few times, he now stops barking, looks at me and usually comes to me for his reward (treat). He is a work in progress.

What does bark Begone do?

Bark Begone uses an ultra high pitched sound which humans cannot hear, but which gets your dog's attention right away. The sound is so uncommon to your dog that it stops it in the middle of bad behavior.