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It is generally not recommended to add mayonnaise to a home composting bin.
Mayonnaise is typically made with a mixture of eggs, oil, vinegar, and other ingredients, and it may not break down easily in the compost pile.
In addition, mayonnaise can contain artificial preservatives and other chemicals that may not be safe for plants.
If you have leftover mayonnaise that you want to dispose of, it is generally better to throw it in the trash, rather than adding it to a home composting bin.