One last pointer....when you brush your teeth before test make sure you SCRUB the daylights out of your tougue, gums AND inside cheeks. Don't let ANY part of your mouth go without a COMPLETE scrubbing. Make sure the mints you use are altoids and whatever you do DO NOT let on that you have used any mints or mouthwash. Spit the mint out right before walking in to take test. With it being a swab test I would almost bet they will ask. Let me know by chance if they do ask about mints.