I asked my dentist what I could do about bad breath, as Listerine only works for about 20 minutes for me, and then my breath goes back to smelling rank. She said to mix H2O2 (Hydrogen Peroxide) with mouthwash and swish/gargle for about 1 minute. I tried it last night and this morning, and My mouth feels NOTICABLY cleaner and my tongue is MUCH more pink and has lots less white stuff on it.
Definitely give it a try if you're suffering (like I was) from stanky breath.
Definitely give it a try if you're suffering (like I was) from stanky breath.