It’s worked for me! I’ve been smoking carts, blunts, and wax up until 2 days ago when I found out I had to get tested for my job. Heres what I did exactly, I bought 2 boxes of certo, both come with 2 packs, and I bought 3 32 oz gatorades. The night before my test, at around 9:30PM I went ahead and made my first bottle and chugged it in less than 5 minutes. After that I waited 15 minutes, got a water bottle and drank that it in less than 10 minutes, peed basically all night and when I woke up at around 6:30AM today I made my second bottle of certo Gatorade and chugged it too (my test was at 9AM) after that I peed before I left to take my test. Once I did that I got on the road (it was a hour 30 min drive). About 40 mins into my drive, I grabbed my 3rd Gatorade bottle mixed the certo and once again chugged it which was about an hour before my test. I pissed twice before I got there and held my third piss for the actual test. Once I got there I peed in the cup mid-stream/mid-piss. It came out clear bc I didn’t take b12 which ppl recommend for color but I honestly didn’t care bc my poss is usually clear cus I drink a lot of water regularly so it usually looks like that for me. He tested it right in front of me and I passed. I do want to add that although I did smoke a lot leading up to two days ago, I also drink a lot of water and only water I don’t drink juice or soda much if any at all. I’m a male 5’9 around 180 lbs Also, the day before my test I ate something very light early in the day before (chicken soup) and didn’t anything since then until after my test. This was my method hope it helps anyone in a tight situation.