The Real Reason(s) Why You Should Never Put Eggshells Back in Their Carton
Putting empty eggshells back in the carton might seem harmless, but it’s actually a bad idea. Eggshells can carry bacteria like salmonella, which poses a risk of cross-contaminating the remaining eggs. They also produce unpleasant odors, create sticky messes, and compromise the carton’s usability. Instead, discard shells in a bowl or compost them properly to keep your fridge and kitchen clean and safe.
By Ilaria Canevara
There’s No Shame—We’ve All Done It
Let’s be honest—every one of us has done this at least once. You’re cracking eggs with one hand while scrolling your phone with the other, and instead of walking over to the trash can or compost bin, you casually toss the empty eggshells back into the carton. It seems logical, convenient, and harmless. After all, you’re not planning to keep them there long. But here’s the truth: putting eggshells back into their carton can do more harm than you might think.
The Salmonella Risk Isn’t Worth It
Even after you’ve emptied them, eggshells can harbor bacteria such as salmonella. These microscopic hitchhikers cling to the porous surface of the shell. Tossing them back into the carton invites bacteria to spread to the remaining eggs, putting you at risk for foodborne illness. The carton’s job is to protect eggs—not become a breeding ground for germs. Even if stored in the fridge, bacteria can survive and contaminate your next breakfast.
It’s a Smelly, Sticky Disaster Waiting to Happen
