hey all, at the school im attending now, they give random/suspicion drug tests but they are the oral swab test. alot, and i mean ALOT of people swear by listerine, and as long as u swish daily before school, you will pass the drug test with flying colors. some have said that they passed them, some probably havent been tested. does anyone kno the facts about the swab test and if the use of listerine will allow you to "pass" the test? thanks guys