Serious question, is the 'five second rule' for dropped food actually safe?

I was at a family picnic in Grant Park last weekend and saw my cousin drop a chip, pick it up, blow on it, and eat it, saying 'five second rule'. It made me think about this old myth everyone seems to believe. I looked it up once and a study from Rutgers found bacteria can transfer to food in less than a second, especially on wet surfaces like a kitchen floor. The type of surface matters way more than the time. A dry chip on a clean picnic blanket is probably low risk, but that same chip on a public sidewalk is a bad idea no matter how fast you grab it. The rule gives a false sense of safety. Has anyone else looked into this or had a bad experience that proved it wrong?

3 comments

3 Comments

anna_fox76h ago

Imagine eating pizza off a floor with a cat.

thomas34611h ago

My buddy Dave swears by the five second rule, but it totally failed him once. He dropped a piece of pizza on his apartment kitchen floor, snatched it right up, and ate it. He spent the next two days in the bathroom. That floor looked clean, but he had a cat walking around there. The study you mentioned makes sense, it's about what's on the surface, not the clock.

ruby_rivera766h ago

Yeah, that part about the cat. People forget about pet germs. Even a clean looking floor isn't safe to eat off of. The rule is just an excuse.