Garbage disposals frequently appear in kitchens across the U.S., helping to manage leftover food scraps. While some units are more efficient than others, it’s important to ensure proper use by avoiding items not designed for these appliances.
Shells from crustaceans and mollusks top the list of items that should never be placed in a garbage disposal. Disposing of them in this manner risks damage to both the disposal unit and the plumbing. The device operates by grinding food waste into small pieces for drainage. However, its mechanism isn’t suited for tough shells.
Hard shells, like those from crabs and lobsters, can damage the motor or grinding components. Softer shells won’t grind down completely, leaving you with bits that may decompose and produce unpleasant odors.
Shellfish doesn’t have to be discarded; avoid the garbage disposal
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The hardness of shells originates from calcium carbonate, which forms crystalline structures when it binds with proteins. This applies to eggshells as well, meaning they should also stay out of the disposal. So, what are the better disposal methods?
Before throwing away those oyster and clam shells, consider other options. They can be composted in your home pile, provided you boil and crush them first. Some organizations even collect empty shells for reef restoration projects. Additionally, you can repurpose them for crafts or decor, just remember to boil or sanitize them first.
If you’re more interested in land-based proteins, smaller bones from certain meats can sometimes go down the disposal. Bones from fish are typically acceptable as well. However, expect some noise while the disposal operates. Check the manufacturer’s guidance to ensure your unit can handle such items.
