I am on probation and have tried just about everything to try to pass. I know that the peeing in a cup then putting water in it doesnt work, but there are ways to get around it. It really depends on what type of test they give you, if its just a home piss test you can pass it very easily by just drinking a gallon or so of water about an hour before. If its the type of test that gets sent to a lab then you have a whole different situation on your hands because then you absolutely have to have someone elses urine or that fake urine. If you attempt to drink one of those "detox" drinks or pills, or try to drink water before there is a chance your test will show you are THC free but it will show that you altered the test. The technology now adays makes it difficult but if its for work, they may just let you pee without being monitered so you could easily bring in someone elses clean urine, just make sure it is from a guy, cause they can tell if the urine is from a male or female. Other then that in the off chance that they watch you pee your best bet might just be a wizzanator or pissantor with the fake urine. Trust me I talk from experince here because i have failed tests before trying out most of the meathods you hear about.