While running cold water from the tap, you can put just about any non-fibrous food down your disposal. Some of these foods include meat scraps, eggs, egg shells, coffee grounds, bones up to ½ inch in diameter, fruits like apples, and peelings from cucumbers, potatoes, citrus fruits, etc.
Never put fibrous food scraps down your garbage disposal, as they can get tangled and lock up its components. Foods to avoid include corn husks, asparagus, celery, or artichokes. Be careful with large amounts of pasta or large chunks of food waste, as they can burn out the motor.