SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/five-second-rule-myth

You drop a snack on the floor and grab it in 2 seconds. Are germs on it yet?

They can be. Bacteria can jump to food in under a second.

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The Just Right card

Too littleTrust the five-second rule every time
Too muchBleach the floor after every crumb
Just rightDropped food can pick up germs instantly

Huh, didn't know that: In the Rutgers tests, carpet transferred fewer germs than tile or stainless steel, and watermelon picked up the most.

The dad joke
What did the floor say to the desk? I can see your drawers!
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References

Answer: Yes, germs can transfer in under a second. Scientists at Rutgers found bacteria can move onto dropped food in less than a second. Wet foods pick up the most germs. Speed doesn't make it safe.

  1. Rutgers University: Rutgers Researchers Debunk 'Five-Second Rule' www.rutgers.edu/news/rutgers-researchers-debunk-five-second-rule-eating-food-floor-isnt-safe
    Sometimes bacteria can transfer in less than a second
    Checked 2026-10-09.

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Test yourself in the game

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That's stuff everyone should know.