12 Creative Ways to Reuse Eggshells at Home, in the Garden, and Beyond

2. Use Crushed Eggshells Around Garden Plants

Some gardeners scatter crushed eggshells around plants as a natural gardening experiment. The rough pieces are often suggested as a barrier against slugs and snails.

To try this method, crush clean, dry shells and spread them in a ring around vulnerable plants. Replace the pieces after heavy rain.

Keep expectations realistic: eggshell barriers do not reliably stop slugs and snails. For better protection, consider hand-picking pests, removing hiding places, and using appropriate garden barriers.

3. Add Calcium to Soil When Needed

Eggshells contain calcium, an important nutrient for plant growth. However, the calcium in whole or coarsely crushed shells becomes available very slowly.

If your soil genuinely needs additional calcium, a soil test can help determine the best solution. Finely ground eggshells may contribute calcium over time, but they are not a quick fix for plant problems.

For example, blossom-end rot in tomatoes is often associated with problems transporting calcium within the plant, frequently because of inconsistent watering. Simply adding eggshells to the soil may not solve it.

4. Make a Gentle Scrub for Suitable Kitchen Items

Finely crushed eggshells can act as a mild abrasive when mixed with dish soap and water.

For a simple cleaning mixture, use a small amount of thoroughly cleaned, finely crushed shell with dish soap. Apply it only to durable surfaces that can tolerate gentle abrasion.

Avoid using eggshell powder on nonstick cookware, delicate glass, polished surfaces, or anything that could be scratched. Always test a small, hidden area first.