ok so i talked to my friend who took one hit 5 days before didnt drink water or do anything at all and she passed... however shes like 5'6 and 117 she's pretty tiny! certo sux it makes the gatorade all thick and eew-y but yea it works so i say do that.. its like 2 bucks and the 32 oz gatorade is like a dollar so there u go! all i kno dude is drinking water doesnt do much its important to drink as much as u can possibly take right before the test.i smoked 9 days before n then i drank 2 n a half gallons and two smaller bottles of cranberry juice but i still dont know the results so i guess not much of this even matters to u if u dont know how it ended up! i'll let u kno i promise.. either tomorrow or friday!