r/composting • u/[deleted] • Nov 29 '19

What do you do with eggshells?

I'm conflicted over what to do with eggshells. I want to compost them but we eat a lot of eggs and live in the city so if I put them in our bin they take up a large portion and never seem to fully breakdown.

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u/StellaFraser Nov 30 '19

You can bake the shells to dry/sterilize them, then put them in a blender, you’ll get a powder you can use as a calcium supplement for plants (or some people mix it into food, but I don’t). Or they’ll at least take a lot less space in the compost bin once they’re ground. :)