I was remindied of this alternate Listerine usage several years ago by a relative... but she found out the hard way that it can also be a very dangerous product to use in this manner. Listerine contains a high concentration of a very specific type of alcohol. That mixture is extremely flammable under the right conditions - including being used near a gas grill. POOF! No more patio...
and no more eyebrows...
Just use extreme caution when you are using ANY product in a way that it was not specifically designed or approved for.