Listerine is crazy intense on your mouth. I wouldn't trust anyone who thinks that Listerine doesn't work.
That stuff just burns all bacteria out of your mouth. One thing I have noticed with Listerine is that it kinda oxidizes
your mouth and gets your mouth super dry, so you have to rinse your mouth out with water afterwards to regain that normal
feeling. Listerine doesn't really leave my mouth feeling fresh, but more or less abused. I think if you swished
paint thinner you'll have the same feeling in your mouth.