Using an ATM Is Like Sticking Your Hand in a Toilet 4.77K Brian Moylan 01/11/11 04:15PM Filed to: Gross Gross Science Studies ATMs atm machines Toilets Gettypic Tweetg Tweetd Tweetv Fb Scientists in London took samples from busy ATMs and nearby toilets and discovered they have the same type and amount of bacteria. Either people are wiping with dollar bills or they aren't washing their hands. I'm sticking to credit cards.