How Long Will Mouthwash Affect A Breathalyzer?

How Long Will Mouthwash Affect A Breathalyzer? Only hydrocarbons from alcohol register on modern breathalyzers. However, you should always wait about 15 minutes after using mouthwash and substances that have trace amounts of alcohol if you’re in a court-ordered IID program. How much can Listerine affect a breathalyzer? If a sober person gargles and spits