I have run listerine through charcoal filters intended for water purification in order to remove any harmful additives from the ethanol.is this going to help.i would also like to know how harmful the other ingredients other than the ethanol are for oral injestion.one more question...would freezing the filtered listerine result in the crystalization of the harmful ingriedients in listerine to make it safe for oral injestion.
sorry if this makes me sound like a creep but i live in an area that does not sell alcohol.