How long does a small amount of marijuana stay in your system?

about a month enless you detox yourself, wich only sometimes works.

Another Answser:

There is no known safe way of detoxing yourself from marijuana. All of the so-called "cleaning" methods are bogus and unsafe, and can also be detected in a drug test as an attempt to subvert the test; such attempt at subversion counting as a positive result. Bottom line: If you do not want to test positive, then don't do the drugs.