Part 1 Cleaning Your Garbage Disposal 1 Physically remove lodged objects. 2 Flush with water. 3 Use ice cubes and salt. 4 Scrub with an old toothbrush or scrub brush. Part 2 Eliminating Odors 1 Use citrus fruit peels. 2 Use baking soda and vinegar. 3 Rinse with a little bleach. 4 Use Borax. Part 3 Maintaining Your Garbage Disposal 1 Only put biodegradable food items in your garbage disposal. 2 Run your garbage disposal for longer each time you use it. 3 Avoid getting grease in your drain. 4 Cut large food items into smaller pieces.