I saw the adds for that stuff years ago, and the YouTube videos. Never bought any.
It works great when the neighbor insists on keeping their window open while playing loud music.
I used to run a trap line and had some leftover pure essence of skunk to cover human odor in red fox trap sets. That works well too.
In high school we would put a few drops on the door handle of friends cars so they got it on their hand when they opened the door!