3. Start Seeds in Eggshells

Here’s a fun idea for gardeners.

Instead of throwing away the bottom half of an eggshell, you can use it as a tiny seed-starting container.

Carefully rinse the shell and make a small drainage hole in the bottom.

Fill it with a little potting mix and place a seed inside.

The shell is biodegradable, so when the seedling is ready to be transplanted, you can place the shell and seedling into the soil.

It’s particularly useful for small seedlings and makes an inexpensive little container for starting plants.

Just remember that eggshells are small.

As the plant grows, it will eventually need more space.

4. Add Them to Your Garden Compost

If you don’t maintain a traditional compost pile, eggshells can still be incorporated into other composting systems.

Whether you’re using a backyard compost bin or another suitable composting method, clean crushed eggshells can contribute mineral material.

The key is preparation.

Avoid adding shells covered in large amounts of egg residue, especially if you’re concerned about odors or attracting unwanted pests.

A quick rinse followed by thorough drying can make the process much cleaner.

5. Use Eggshells as a Household Abrasive

Finely crushed eggshells can have a mild abrasive texture.

That makes them useful for certain cleaning applications when combined with another cleaning ingredient.

For example, finely crushed shells can sometimes help loosen residue from narrow containers when mixed with water and a small amount of dish soap.

The abrasive particles can help scrub surfaces that are difficult to reach.

However, be careful.

Don’t use eggshell abrasives on delicate, polished, or easily scratched surfaces.

Avoid using them on materials such as:

When in doubt, test a small hidden area first.

Ever tried cleaning a narrow bottle and discovered that your sponge simply won’t fit inside?

Crushed eggshells may offer a simple solution.

Place a small amount of crushed, thoroughly cleaned eggshell into the bottle.

Add some warm water and a little dish soap.

Then gently swirl or shake the container.

The small particles can move around inside the bottle and help loosen residue.

This works best for sturdy containers.

Again, avoid using the technique on anything that could easily scratch.