Dining Out? Do You Know Which Restaurant Tabletop Item Is Germier Than a Toilet Seat?

Dec. 30, 2010 — -- Here at "Good Morning America" we have tested just about everything for germs – from pools to playgrounds – even the lemons in your iced tea.

But this morning, we tackle some restaurant items that were new to us and our experts.

You might not examine them closely when you use them or think of the hundreds of people who have touched them before you. And neither had we. Until now.

We're talking about the condiments and menus on every restaurant table.

Which harbor the most germs?

Ketchup. Mustard. Salt. Pepper. Sugar. The menu. Which tabletop item harbors the most bacteria? We asked people on the streets of Washington, DC to make their guess.

Crystal says she's going to go with the ketchup.

"Because ketchup goes on a lot of different things so that means that a lot of different people are possibly touching it," she said.

Amanda says she thinks it's the menu.

"Because everyone touches it, including the waitress. And I used to wait tables, and I know how often you wash your hands."

Ronald disagrees.

"Well, in my opinion, it would be the salt and pepper."

We'll tell you the correct answers in a minute, but first here's how we did our little study.

We tagged along undercover while a researcher with the University of Arizona swabbed the items on the tables of 12 restaurants in three states: New York, Ohio and Arizona.

Then analysts at a lab examined the swabs for total bacteria counts and coliforms – a broad class of bacteria found in our environment. The presence of coliforms can indicate fecal matters.

"These are objects you're going to touch that can serve as vehicles that are transmitting micro organisms that can potentially make you ill," said Dr. Chuck Gerba of the University of Arizona.

And they're objects in the area where you eat, which gives the germs a pathway into your body.

We asked Susan what items she thought had the least germs.

"I'd say the sugar," she said.

Yup, sugar had the lowest average count, with only 2,300 bacteria.

"Probably fewer bacteria on the sugar, because it might be handled less," Gerba said.

When we asked people to guess which item is the germiest, ketchup got the most votes, but actually, ketchup, mustard and salt all fell in the middle at every restaurant we visited.