How to use: Rinse and dry a few eggshells. Crush them into small pieces. Add to your coffee grounds before brewing. The calcium carbonate in the shells neutralizes some of the acids that cause bitterness.Pro tip: Use about one eggshell per pot of coffee. Rinse the shell thoroughly first.
8. Drain Cleaner and Deodorizer
Small eggshell pieces can help scrub your pipes as they travel through, loosening grease and food particles. The eggshells also absorb odors.
How to use: Crush a handful of eggshells into small pieces. Run hot water, then add the shells. Follow with more hot water. The shells will help scrub the inside of your pipes.
Important: Do not use this method if you have a garbage disposal (the shells can dull the blades). For disposals, see below.
9. Garbage Disposal Sharpener and Freshener
For garbage disposals, eggshells serve a different purpose. They help clean the grinding components and freshen odors.
How to use: Drop a handful of crushed eggshells into the disposal while running cold water. Turn on the disposal. The shells will help scour away food residue and neutralize odors.
Pro tip: Follow with a few citrus peels for a fresh, clean smell.
10. DIY Chalk Paint
Want a matte, vintage finish on furniture or decor? Powdered eggshells can be used to create homemade chalk paint.
How to use: Grind eggshells into a very fine powder. Mix 1 tablespoon shell powder with 1 cup latex paint. Stir well. Use as you would any chalk paint.
Best for: Small furniture projects, picture frames, decorative items.
For Your Skin and Health (3 Natural Remedies)
Eggshells aren’t just for your home—they can also be used in your beauty routine.
11. Calcium Supplement (For Plants AND People)
Eggshell powder is a natural source of calcium for humans too. A teaspoon of finely ground eggshell powder contains about 800-1,000 mg of calcium (nearly a full day’s supply).
How to use: Grind eggshells into the finest powder possible (a coffee grinder works best). Add ½ teaspoon to smoothies, yogurt, or oatmeal. Start with a small amount and work up.
Important safety note: Sterilize eggshells first by boiling for 5 minutes or baking at 200°F for 10 minutes. This kills any bacteria (including salmonella). Talk to your doctor before adding any supplement to your routine.12. Exfoliating Face and Body Scrub
Finely ground eggshells make a gentle, natural exfoliant that removes dead skin cells without microplastics.
How to use: Grind eggshells into a fine powder. Mix with equal parts coconut oil or honey. Gently massage onto damp skin in circular motions. Rinse thoroughly.
Pro tip: For a simple face scrub, mix 1 teaspoon eggshell powder with 1 teaspoon plain yogurt.
13. Soothing Skin Mask for Irritation
Eggshell membrane (the thin layer inside the shell) contains collagen and other compounds that may help soothe skin irritation.
How to use: After cracking an egg, carefully remove the membrane from the shell. Apply the sticky side directly to minor cuts, scrapes, or irritated skin. Let it dry, then peel off. The membrane acts as a natural bandage.
Note: Only use on clean, minor wounds. For anything serious, seek medical attention.
For Your Pets (2 Helpful Uses)
Your furry friends can benefit from eggshells too.
14. Calcium Boost for Home-Cooked Pet Food
If you make homemade dog or cat food (under veterinary guidance), eggshell powder is an excellent natural calcium source.
How to use: Grind sterilized eggshells into a very fine powder (coffee grinder). Add ½ teaspoon per pound of homemade food. Mix thoroughly.
Important: Always consult your veterinarian before adding supplements to your pet’s diet. Too much calcium can be harmful.
15. Natural Wormer for Chickens (If You Have Backyard Hens)
If you keep chickens, crushed eggshells serve two purposes: they provide calcium for stronger eggshells, and the sharp edges may help control internal parasites.
How to use: Dry and crush eggshells (not powder—small, sharp pieces). Offer in a separate dish for your hens to eat as they need.
Pro tip: Bake the shells at 200°F for 10 minutes first to kill any bacteria before feeding them back to your chickens.
For Arts, Crafts, and DIY (2 Creative Ideas)
Eggshells have a long history in art. Here’s how to use them today.
16. Mosaic Art and Decoupage
Crushed eggshells create a beautiful, textured mosaic effect on picture frames, flower pots, or canvases.
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