Funnily enough, one of the things that can cause you to incorrectly fail a test are these mouth washes!

While on this subject, I read a very interresting article a couple of years ago in a good quality magazine saying that foods high in poppyseed content such as muffins, bagels, etc can cause a drugs test failure due to the inability of these tests to tell them apart from opium. They ran tests and had people failing on scarily low consumption levels.

They had a show about that on sky few months back, they managed to get a vicar to fail a drugs test after only eating bagels all day long.

What I would say about he mirror is, it has worked hard in past years to move away from trashy red top paper market, however that peice is a shocker.