Research has showed that up to 90 per cent of mugs in work place kitchens are coated in dangerous germs.
And not only that, 20 per cent of these cups actually carry faecal matter.
The study was carried out by Charles Gerba, a professor of environmental microbiology at the University of Arizona.
Dr. Gerba found that the reason our mugs are covered in all kinds of bugs is because we are washing them in a communal kitchen with sponges. Read more