GDay everyone. A friend of mine who lives in NSW was worried about how long one of these tongue scrapers could detect meth for because he needs to do a lot of driving shortly. Apparently he has been smoking it for 5 days but, he has not been binging on it in the sense of getting no sleep and not eating. He would normally have X amount of hits through out the day but never after 3pm. He understand that there is different variables for different people but would appreciate any info on these new RDT methods.