Can Egg Shells Go in a Garbage Disposal?

26October 2023

Can Egg Shells Go in a Garbage Disposal?


We’ve all been there—cooking breakfast or baking—and there we stand, eggshells in hand, facing the sink’s garbage disposal. The convenience of flipping a switch and making it all go away is tempting, but is it the right thing to do? Can eggshells go down the garbage disposal safely?

In this article, we will explore the pros and cons and offer alternatives for those pesky eggshells.

The Myth About Egg Shells and Garbage Disposals

There’s a common myth that eggshells can be beneficial for your garbage disposal, helping to sharpen the blades. However, the truth is far from it. Most modern disposals don’t have “blades”; they have impellers that aren’t sharp to begin with and don’t need “sharpening.” The eggshells can actually create more problems than solutions.

The Problems with Eggshells in Garbage Disposals


The membrane lining inside the eggshell can get tangled in the disposal’s impellers, leading to clogs.

Sludge Build-Up

Crushed eggshells can combine with other waste, forming a sludgy substance that is hard to break down. Over time, this can also contribute to clogging.

Plumbing Issues

In some cases, the tiny, granular waste of eggshells can create problems deeper in the plumbing system, leading to expensive repairs.

What Experts Recommend

Plumbing and garbage disposal experts generally advise against putting eggshells down the disposal. If you do end up putting them in, make sure to run cold water before, during, and after operating the disposal to minimize potential issues.

Alternatives to Disposing of Eggshells in Garbage Disposal


Eggshells are rich in calcium and make a wonderful addition to compost piles.

Garden Use

Crushed eggshells can be sprinkled around plants as a natural pest deterrent.

Creative Crafts

Some people even use eggshells for craft projects, so if you’re feeling creative, this could be a fun alternative!


While the convenience of disposing of eggshells via garbage disposal might be tempting, the potential issues far outweigh the benefits. It’s best to opt for alternative methods like composting, gardening, or crafts to make the most of your eggshells and keep your garbage disposal running smoothly.

Further Reading

If you found this guide helpful, you may also be interested in our other articles on garbage disposal care:


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