no bleach does not work to pass a urine test...i know because i have tryed it.
No, not really.
No, baking soda has no effect on a drug screen.
Drinking Ready Clean does not guarantee that you will pass a drug test. It is said to remove toxins from the body, but what it moves and how much varies. If you are a heavy drug user it will not work for a drug test.
The best way to pass any drug test is to not do illegal drugs. There is no way to pass a drug test overnight.
Yes, to be eligible to work for FedEx you do have to pass a drug test and background check. And then once employed FedEx can send you for random drug test throughout your career with FedEx.