I would stop smoking for at least two days before the test. Detection times for swab testing is usually 24-36 hours, but can go back as much as 96 hours. Brush your teeth and use mouthwash thoroughly right before you take the test an you should be fine. Just remember... the longer you abstain the better off you'll be.
Deige Reviewed by Deige on . mouth swab Anyone out there know anything about a mouthwash. I have a mouth swab drug test for a job next week and am trying to find out what (if anything) I can do. I ran into some dude at Healing House who had a bottle of some shit but I only half-paid attention cuz I had a job at the time. Any info would be great. Merry Xmas. Rating: 5