Dude.....go to Super Wal-Mart into the jelly/preservatives aisle....look for SureGel.....its a powder that you use to make jelly......grab one box that comes with two packs in it......should be a buck or two......now go and grab some distilled vinegar for a buck.......at home take the two packets of SureGel and mix them into a large glass of water.....it will taste like lemonade with no sugar......drink that shit down at least 1hour and 1/2 before the piss test.......this stuff will taste like shit, but it's worth it........then, 30 minutes before the test turn up the vinegar and drink as much as you can stand to..... now drink water..lots of it....and you're gonna have to piss like 3 or 4 times before you take the test........when your piss is clear, you know you're ready........