This product works! I have smoked almost every day for the last 25 years using a bong. After the 10 day detox I experimented and got a faint line. I stopped 3 days before the detox and followed the instructions to the letter. I experimented myself again today 7 more days later and got a dark line showing I passed! And I used the more expensive cup experimentation from walmart. If I can pass anyone can. Thanks for the peace of mind ToxinRid!