Pour two cups cubed ice down the affected drain. Run the garbage disposal for three to five minutes or until the ice is completely pulverized. The ice helps loosen the grime and grease on the splash guard while sharpening the disposal’s blades.
Unplug the garbage disposal or flip the circuit breaker to the “off” position. This ensures you don’t accidentally turn on the disposal during the cleaning process.
Pour one cup baking soda down the drain. Allow the baking soda to sit for two to three minutes before slowly pour two cups white vinegar down the drain as well. The bubbling reaction caused by the two products cleans the scale, grime and dirt from the splash guard.
Allow the mixture to remain for at least one hour before flushing them down the drain with two to three gallon hot water from the tap. Continue to allow the tap to run while removing any remaining loosened scale with a round scrub brush. Insert the scrub brush into the drain and lift it back up, rotating as you go to clean the underside of the splash guard.
Turn the garbage disposal back on a use as needed.