Sorry if you think my purpose here is to defend products sold at head shops. If you think plain water will allow you to pass a test for marijuana just one day after stopping smoking then good luck. Also if you think the simple test they have where you pee in a self testing cup and if it does not turn the wrong color is the same as the labs where they can analyze every element in the urine are even remotely similar you really are misinformed. There are definitely differely levels of testing for marijuana as well as other drugs.

I noticed you dismissed what I have seen with my own eyes as anecdotal accounts. I am not going to give names, dates and locations but I definitely know folks who have failed tests and who have passed tests when smoking marijuana. What personal experiences do you have in this area. Apparently little or none.

Researching, testing and examining the results as well as interviewing numerous individuals are a legitimate way to find if any product is effective. Just research does not cut it. Talk to some real world people.