I have been a daily smoker for as long as some of you have been on the earth and I can attest to the quality of the passyourtest.com products. I had a test with notice so that gave me time to a) ABSTAIN for 10 days, DRINKING ONLY WATER for that period, and b) using their FailSafe product the morning of the test. What do I mean by "Help Yourself"? If you know you have a test coming, DON'T SMOKE AND DRINK A LOT OF WATER! NO PRODUCT WILL WORK if you continue to smoke right up to testing day!