I failed a random drug test about 10yrs ago. I didn't lose my job but couldn't work until I had a negative reading. I spent the first 3 weeks drinking loads of water and sweating my ass off. Each week I went and had myself tested to see if the thc levels we're going down and each week I was disappointed. My original reading was about 350 and was only dropping by about 20 each week. Then I started taking urals and it just shredded the thc away. Two weeks and test later I was clean. So I know it works im just curious how