JGG, first, it is a dilution product. I know what the label says, I also know the truth. Second, forget the guarentee. If you fail, I guarentee you'll never collect a dime. Last, these magic potions have a success rate of around 90%. The longer you're clean, the better your chances of diluting your urine below testing cutoff levels. If you want to be 100% sure of passing, substitute a clean sample. Many headshops sell urine substitute products and if your local doesn't, try Quick Fix at this link. http://www.urineluck.com/product_details.php?id=1
Read both the dilution and substitution guidelines I have linked to in my signature. Hope that helps. N2