Don't Eat That Sandwich!

If you drop a sandwich on the floor, how quickly does it pick up bacteria?

By Jennifer Cutraro, 00:00 AM May 18, 2007

Oops! In the rush to get to school, you drop a piece of toast on the floor. Do you throw it away or decide it's still OK to eat?

Food can still look appetizing after it has fallen on the floor. But is it safe to eat?

Food can still look appetizing after it has fallen on the floor. But is it safe to eat?

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If you're like most people, you eat it. Maybe you follow the "5-second rule," which claims foods are safe to eat if you pick them up within 5 seconds of dropping them.

But you might want to think again. Scientists now say that 5 seconds are all it takes for foods to beco...

Source URL: https://student.societyforscience.org/article/dont-eat-sandwich