My friend told me that ther is a substance called "vales" it will give you like a 5 hour clear zone(you can buy it in Gnc or something like that). I never tried it so I cant say anything for sure, but, my friend was saying with confidece that it will work. All I did is eat watermellon dring water( and some beer). I pissed in one day more then I ussualy piss in a month(and got cleaned). Good luck man, what can I say.