aal the drug test ive taken have gone to the lab they didnt say shit when my piss was clear and kits i have friends that have tried them and failed so i never risk my freedom on something that says if fails you get your money back that means there not 100% im telling you the way ive done and had work without risk and if you smmoke like 1 time every 2 weeks you dont really have to drink water excessively just drink normal and that b-12 stuff makes your piss yellow again and if you eat healthly your piss is clear anyway so you really have nothing to worry about doing it my way again im telling what worked for me after friends failed use kits i dont trust them you can and be fucked or be the lucky few who pass using them but ive pass many drug test doing this and they have all gone to the lab so you can take my advice or not