The Real Reason(s) Why You Should Never Put Eggshells Back in Their Carton
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
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Cracked eggshells are messy. Residual egg white (albumen) clings to the inside of the shells, creating a sticky and smelly situation. Piling those shells back in the carton essentially turns it into a mini compost pile right in your fridge. The odor may not hit you immediately, but over time, it can seep into other foods. Suddenly, your fridge has a faint but unmistakable smell of rotten eggs—all because of a shortcut.
Egg Cartons Aren’t Built for That
Egg cartons are designed to protect clean, whole eggs. Most are made from cardboard or foam, which absorb moisture and trap odors. Once contaminated with sticky, used shells, the carton becomes unusable for recycling, repurposing, or safe storage. You’ve effectively ruined something meant to keep your food clean and safe.
The Right Way to Dispose of Eggshells
The better option? Keep a small bowl nearby when cracking eggs, and place the empty shells there. When you’re done cooking, you can toss the shells into the trash, compost bin, or even use them in your garden—crushed eggshells are great for soil. The key is keeping them out of the carton and out of your fridge. A simple habit change can protect your food, keep your kitchen cleaner, and reduce unwanted smells.
