Food waste is fed into the disposer together with water from the cold tap. The food waste is simply and quickly ground into fine particles, no knives and no blades. The food waste is then flushed through the waste disposer and into your normal waste system. The IN-SINK-ERATOR food waste disposer is designed to cope with most types of food waste, including small bones, meat, fish, peelings, eggshells, nuts and much, much more.