Can Eggs be Composted? Discover the Benefits and Best Practices

Can Eggs Be Composted?

The Benefits of Composting

Composting has gained popularity in recent years as an eco-friendly way to manage organic waste. This natural process involves decomposing organic materials, such as kitchen scraps and yard waste, to create nutrient-rich compost that can be used as a soil amendment for gardening and landscaping purposes. While many everyday food items can be composted, people often wonder whether eggs can also be included in their compost piles.

Understanding the Eggshell Composition

To determine whether eggs are suitable for composting, we need to delve into the composition of an eggshell. Eggshells consist primarily of calcium carbonate, which is a valuable nutrient for plant growth. They also contain trace amounts of phosphorus, magnesium, sodium, potassium, and other minerals that benefit the soil.

Composting Whole Eggs

While it is technically possible to include whole eggs in your compost pile or bin, it is generally not recommended due to potential issues. Whole eggs may attract pests like rats or flies if they are not buried deeply enough within the compost pile. Additionally, if you have an open-air composter or maintain a backyard heap without adequate heat levels (above 140°F), it might take significantly longer for the eggs to break down fully.


  • If you decide to add whole eggs to your composter,
  • Bury them deep within the pile,
  • Avoid placing them on top where they could become easily accessible by pests.

Cracked or Crushed Eggshells

Unlike whole eggs, crushed or cracked eggshells are excellent additions to your composting efforts. Their high calcium content helps balance out acidic components present in some food scraps while providing essential minerals needed for healthy plants. By crushing the shells before adding them to your compost, you can speed up their decomposition process.


  • Collect and rinse eggshells,
  • Dry them thoroughly,
  • Crush or grind into small pieces, ensuring they are no larger than a dime.

Avoiding Odor Issues

When composting eggs or eggshells, it’s crucial to take steps to prevent unpleasant odors from developing. To avoid any smelly surprises:


  • Do not store large quantities of whole eggs in your kitchen compost bin for extended periods;
  • Rinse eggshells before storing them for future use in your composter;
    • This prevents the accumulation of any residual proteins that might cause odor problems.

Egg Cartons and Packaging

While we’ve focused on eggshells so far, it’s worth noting that cardboard packaging materials like egg cartons can be composted as well. These paper-based products break down easily during the composting process and contribute valuable carbon to maintain a balanced ratio with nitrogen-rich materials.


  • Slightly tear apart or shred the cardboard packaging into smaller pieces;
  • This will accelerate its breakdown within the pile.

In Conclusion

The answer to whether eggs can be composted is twofold: while whole eggs are generally not recommended due to potential pest issues, crushed or cracked eggshells are highly beneficial for your compost. Additionally, cardboard packaging such as egg cartons can also be included in your compost pile after being torn apart. Remember these tips when incorporating eggs into your organic waste management practices, and enjoy the benefits of nutrient-rich compost for your garden!