if you want to clean out and start smoking with a clean system (or need to pass a piss test). go on ebay, look up puri blend tea. it is proven to completely clean your system after drinking one gallon in under three hours. I've used it repeatedly, it never fails. If you go on ebay today, there are two auctions for it, and they even have a link to a video clip of a news investigation into passing drug tests, it's funny it shows that the tea actually works. you could wait a month to clean out, or drink tea for three hours, seems like an easy choice to me. oh yeah tea is only like ten bucks with shipping.