9 Genius Uses For Eggshells

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Do you know about these uses for eggshells? You can clean with them, fix Crayons, keep pests out of your garden, even soothe mosquito bites.

Dozens of empty cracked egg shells on a used wooden board

Eggshells are one of those kitchen scraps that our grandmothers treasured but which we tend to think of them as trash. It turns out, eggshells have a variety of uses in your home and garden. So, instead of throwing them out the next time you’re making a cake or omelet, try one of these ways to use eggshells instead.

Uses for Eggshells

1. Make better coffee. Add some crushed, clean eggshells to the basket of your coffee maker along with your ground coffee. They’ll cut the acidic taste, and leave you with a sweeter cuppa joe.

2. Make new Crayons from broken ones. Crumple foil in the holes of a muffin pan and nestle eggshell halves upright in each spot. Put a few pieces of broken Crayons (paper removed) in each eggshell and pop them into a 200°F oven for 10-15 minutes. Let them cool then tear away the shell. Voila-new Crayons perfectly sized for toddlers’ hands.

3. Clean your garbage disposal. Put a handful of shells in your smelly garbage disposal and run it with a steady stream of hot water to remove grease and food buildup.

4. Control pests in your garden. Using crushed eggshells as a tomato fertilizer is one of the easiest uses of eggshells. You can also use them to deter pests. Grind dry eggshells in a food processor and sprinkle them around the base of any plants pestered by snails and slugs.

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5. Start seeds indoors. Eggshells make great seed starters, and you don’t even have to wash them. Put them back into the container and fill them with a good soil-less mix. Plant your seeds, mist with water, and cover loosely with a leftover produce bag. You can plant them shell and all in the garden once they have a set of true leaves.

6. Clean your hummingbird feeder. To clean a hummingbird feeder without harming the birds, empty the feeder, then add crushed eggshells. Fill the feeder halfway with warm water and shake it vigorously. The shells will act as an abrasive, removing any mold or other gunk.

7. Clean a thermos or carafe. It’s tough to get a scrub brush down the narrow neck of a thermos or coffee carafe. Sprinkle a little baking soda in the bottom, add a drop of liquid dish soap and a handful of crushed eggshells, then fill it halfway with warm water. Shake vigorously, then dump and rinse thoroughly.

8. Scour your cast iron pans. Clean without ruining the seasoning of your cast iron pots and pans. This is one of my favorite uses for eggshells! All you need to do is dip a corner of a washcloth into some crushed eggshells and scour away the mess.

9. Make textured paint for kids’ crafts. Mix some clean, dry crushed eggshells with tempura or acrylic paint and let the kids paint popsicle sticks, old paint stirrers, or sheets of construction paper.

BONUS: You can use eggshells to make a mosquito bite home remedy by dissolving them in a jar of apple cider vinegar. Since this process takes about three days, you might want to start a batch and keep it refrigerated for quick treatment. Shake before use and apply to the bites with a clean cotton pad. Replace monthly.

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