Empty eggshells should head for the compost bin or trash can, not back to the carton.

Can I Get Sick from Keeping Eggshells in the Carton?

While shopping, always check to verify your eggs are uncracked and have clean shells!

egg shells on a designed background

Photo: Getty Images

Use them within three weeks of purchase for the best quality and results.

Common Uses for Eggshells

Eggs are a hard-working protein, and that includes their shells!

Did you know that it’s possible for you to use eggshells to sharpen your blender blades?

And instead of tossing them in the trash, add them to your compost.

Then I grind them up with a food processor.

A coffee grinder works well too," says Lisa Bynum, blogger at The Cooking Bride.

“Eggshells are loaded with nutrients that plants need, such as calcium, phosphorus and magnesium.

Are Egg Cartons Recyclable?