EASTON, you don't know the details of everyone's experience so you have no RIGHT to tell us that we didn't use it right. As a matter of fact, I did take the stuff 2-3 hrs before hand. AND not only that, GNC informed me that there was a 4 hrs. window. And I was loaded with so much water, gatorade and tea not only was I about to vomit, but I gave the Gulf of Mexico a run for its money. I didn't risk it. I waited 2.5 hrs and then tested. And its still came back dirty as fuck.
So now what is your defense? Not everyTHING works for everyONE, remember that sweetheart. Body chemistry is at work, body mass indexes, fat indexes, metabolism -- it all contributes.
Think about it ... yeah, we just slurped the shit down without following directions so that .... YAY! we could fail and end up without employment or on probation or whatever. Now we feel better about ourselves?
No. Think again.
In my opinion there are just TOO many questions, TOO many inconsistent results when it comes to those detox drinks.
So, the question is ... are you going to believe the thousands of threads out there that say to stay away from detox drinks? Or the thousands that swear by them?
The choice is yours.

P.S. Substitute.