Yes, this sounds like an effective weay to beat a drug test but I have been on paper, in jail or in a rehab since I was 19, (Im 25) (I am doing good though now, thanks to the suboxone program) anyhow, this doesn't work very well when the p.o. is staring you down the whole time, makes you pull your pants all the way down, etc.       I have a foolproof way, which is somewhat like yours but also works no matter how "up in your business" the person giving the test is....   1.Get a pill bottle. I found the generic asprin bottles work the best b/c they hold enough piss in case you miss some, are easy to fit and have the best grooves on the top to hold your rubber band in place. (Sorry I didnt mention this.....only females can do this! lol) 2. fill bottle with clean urine. (Trust the source, why go through the trouble to pop a dirty urine!) 3. get a piece of aluminum foil, double it. (no more than 2 layers! 1 will be too risky of popping before youre ready, and 3 will be difficult to puncture.) (In a pinch you can use saran wrap or a sandwich baggie, but I strongly suggest tin foil because it is easier to pop and you wont look so akward trying to pop a thick baggie) 4. take the tin foil and place it over the top of the filled bottle, and kinda cup the foil down over the edges so the top is covered and you can see the indent of the circle of the bottle. 5. take a thick rubberband (thicker is better b/c of breaking or slipping) and wrap it around the foil. (this is where the deep grooves of the bottle come in handy). (you should have a bit of excess foil around the bottles top after the rubberband is on) 6. Cut the excess foil off, but not too close to the rubberband. You'll want to use this excess foil to fill in the little gap between the grooves and the body of the bottle. (obviously the next step is to scrunch the foil up filling in the gap. Just do it in mind that you dont want anything to leak. Not only will you look like you pissed yourself but when it comes time to take the test, you'll be out! AND screwed!) 7. Next take electrical tape (Ive done this for years, use electrical tape, it works best), and tightly wrap it around the bottle where the foil meets the bottle. Dont cover any part of the top, just at the rim of the bottle down past the gap that you filled with foil.      (the bottle should be good now, if done properly. If, when tipping it over and LIGHTLY squeezing it, it doesnt leak, youre golden) 8. Lastly you gotta swallow your pride and "boof" the bottle. (If you need to ask what boofing it is, you probably need to stop doing things that require you to fake piss tests! If you really dont know, ask someone! Im sure theyll laugh at you and then tell you! :)  (The temp inside your body will warm the pee to the right temp and it doesnt have to be in there for that long either, I used to put it in right before I went to the p.o.'s office, which was only 10 min away and mine was the right temp).      I have done this for years and it has NEVER failed me!   Though being that I am in college for drug and alcohol counseling, and am not a heroin addict anymore, I shouldnt be sharing this info with everyone but no matter how far Ive come I will never forget how much jail SUCKS! So if you insist on getting high and wont stop, follow these steps and you wont fail your tests. ( And "trucker momma", youre right, I should get paid for this!!)