Hey I am 18 and have been doing weed for a fair while but have now stopped because I want to join the army and I know that they piss test you for that sort of thing. However im interested in taking Magic Mushrooms maybe just once and im wondering how long does the chemicals or whatever last in your system? Can they test you for that sort of thing? How long would be safe so that i can take them and be clean for my test? If anyone has some reliable information on this, that would be great.