The answer is no. Eggshells are a common mistake to put down a disposal. A common myth is that eggshells can help sharpen the blades. ... It can wrap itself around the blades of the disposal, get loose and lodged into the impeller or create a sticky blockage inside your plumbing.

Will eggshells damage a garbage disposal?

Garbage disposals do not have blades. They have impellers that are not sharp, but blunt. So, putting ice or egg shells down the disposal to sharpen the blades will not do any good. In fact, egg shells are not recommended for the garbage disposal as the membrane can get wrapped around the impellers and cause damage.

Why are egg shells bad for garbage disposal?

Eggshells

A shell or two now and then probably won't cause a clog, but Consumer Reports warns that a steady diet of eggshells will eventually lead to buildup and clog your drain. They simply don't break down as well as other foods.