Students do handwashing exercise at Jingtai Primary Schoolin Guangzhou, southeast China's Guangdong Province, on Oct. 15, 2009, the Global Handwashing Day.
Less than one third of men and two thirds of women wash their hands with soap after going to the toilet, a British study by the London School of Hygiene and Tropical Medicine has revealed.
And according to scientists many may only use soap if shamed into thinking they are being watched. When prompted by an electronic message flashing up on a board asking, "Is the person next to you washing with soap?" around 12 percent more men and 11 percent more women used soap.
