believv it or not cranberry juice works (i know everyone is gunna say its a myth) but it actually does my buddy who i smoke with most everyday signed up for the Navyand had been smokeing regulary. He knew when he went for the test they gie you a piss test too so he stopped smoking i think 2-3 days before and drank gallons of cranberyyjuice like 1-2 gallons of it aday and he drank a full gallon before he left for the tests. Then guess what? yup he passed the piss test!