Generally, you can put most biodegradable food waste into your garbage disposal. However, avoid putting in hard items (like bones), fibrous materials (like celery stalks or corn husks), grease, oil, coffee grounds, and eggshells, as they can dull the blades, clog the drain, or cause damage.

To clean your garbage disposal, run cold water and drop a few ice cubes along with some rock salt or vinegar into it while it’s running. This can help sharpen the blades and remove any buildup. Citrus peels can help eliminate odors. Avoid using harsh chemicals. Regularly running it with cold water during and after disposal use helps maintain it.

 With proper maintenance, a garbage disposal can last about 8-15 years. Signs that you might need to replace it include frequent clogging, persistent bad odors, poor performance, or leaks that can’t be easily fixed. If repairs are becoming frequent or costly, it might be more economical to replace the unit.

A humming noise usually indicates that the motor is stuck or jammed. First, turn off the disposal and unplug it. Then, use an Allen wrench on the bottom center of the disposal to manually turn the blades. If that doesn’t work, the problem might be with the motor or electrical connection, and professional help may be needed.