11 uses for eggshells in the home and garden

Eggshells, often discarded without a second thought, have numerous practical uses around the home and garden. Rich in calcium and other minerals, they can be repurposed in creative and sustainable ways. Here are 11 ways to use eggshells:

In the Garden

1. Natural Fertilizer Eggshells are rich in calcium, an essential nutrient for plants. Crush them into a fine powder and sprinkle them in your garden soil or mix them with your compost to boost its nutrient content.

2. Pest Deterrent Crushed eggshells can deter pests like slugs, snails, and cutworms. Scatter the crushed shells around the base of your plants to create a barrier that these pests are unlikely to cross.

3. Seed Starters Eggshells make excellent biodegradable seed starters. Fill half an eggshell with soil, plant your seeds, and when the seedlings are ready to be transplanted, plant the whole shell in the ground. The shell will decompose and add nutrients to the soil.

4. Soil Amendment To enrich your garden soil, add crushed eggshells directly into it. The shells will help to balance the soil’s pH levels and provide a slow-release source of calcium.

In the Home

5. Cleaning Agent Eggshells can be used as a mild abrasive cleaner. Crush them and mix with a little soap and water to scrub pots, pans, and even stubborn stains on countertops. The shells’ gritty texture helps remove tough grime without scratching surfaces.

6. Coffee Enhancer Adding crushed eggshells to your coffee grounds before brewing can reduce bitterness. The calcium carbonate in the shells neutralizes some of the coffee’s acidity, resulting in a smoother cup of coffee.

7. Drain Cleaner Prevent clogged drains by regularly flushing them with crushed eggshells. The shells help to scrape away any buildup in the pipes, ensuring smoother water flow.

8. DIY Chalk You can make your own sidewalk chalk by grinding eggshells into a fine powder, mixing with flour, water, and food coloring, and molding the mixture into sticks. Let them dry completely before using.

For Pets and Wildlife

9. Bird Feed Supplement Crushed eggshells provide a calcium boost for birds, particularly beneficial for egg-laying females. Rinse and bake the shells to kill any bacteria, then crush and mix them with birdseed.

10. Dog Supplement Eggshells can be ground into a powder and added to your dog’s food as a calcium supplement. This can help strengthen their bones and teeth.

Arts and Crafts

11. Mosaic Art Eggshells can be used in various art projects. Dye them different colors and use the pieces to create beautiful mosaics or decorations. This is a great way to recycle eggshells and create unique, handcrafted items.


Eggshells are far more useful than many realize, offering a range of applications in the garden, home, and even for pets. By reusing eggshells, you can reduce waste and take advantage of their valuable properties. So, next time you crack an egg, think twice before throwing away the shell!

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