A false positive may be triggered in our device only if you have had a product that contains alcohol in your mouth. This could include things like mouthwash or chloraseptic spray, but could also include sugar alcohols found in many food and drink products. The sugar alcohols commonly found in foods are sorbitol, mannitol, xylitol, isomalt, and hydrogenated starch hydrolysates. If you think you have eaten or drank something containing questionable ingredients, then rinsing your mouth out thoroughly can improve your chances of not blowing a false-positive. Our ignition interlock device has a cutoff level of BAC 0.025 which means you will not get false positives from foods or drinks with slight levels of alcohol.