Yep always a scammer out there looking to help you part with your hard earned money.
I always recommend subbing with synthetic because if done right its 100% effective in beating the piss police. Yes you can get clean but even doing that you end up with fluctuations of THC metabolite levels. If you prctice a little to keep the temp within range synthetic works every time. And plus once you find out if they do randoms and how you do randoms you can formalize a plan so that you will be prepared for them and not have to give up your unalienable right to smoke cannabis.
`Your a fairly big boy so getting clean can take at least 2 months. It would take me probably 3 months to get clean and if wanted to quit smoking. Have used QuickFix over 15 times for both premployement and randoms for DOT tests and have never failed.