Follow these steps: First, turn the power switch to the off position and disconnect the power at the main fuse or circuit breaker. Next, remove the stopper or the splash guard. Check the interior of the hopper using a flashlight if necessary, for objects that will not grind properly, such as glass or metal, shells, large bones, plastic, or aluminum. Use long-handled tongs to remove any such objects. Never put your hand into the disposal. Once you’ve safely removed the obstruction, turn the power on and reset the button on the disposal unit. Flush the disposal well with cold water.