The myth of drinking a lot of water & cranberry juice doesn't work I am on probation myself & after watching several friends fail drug test I can tell you that it doesn't work. I am in texas there is a product called zydot that is sold here at gas pipes that cleans you out for 4-6 hours that I used to take before I decided to just quit smoking weed because going to rehab or prison just isn't worth me getting high . That product costs about 45 bucks and they even have a bigger size if you are overweight.