There have been some on this forum that have taken 60 days to get clean. Very small percentage but it is true. Your best bet is to get some home test kits and test yourself. For pre-employment you can just sub with quick fix. Read the threads, there are great experts on this forum as FBR and Killerweed. But my advice is just to quit period. Is it really worth all the stress and anxiety you will expirence just thinking about it?