How do you clean mold from bathroom sink rubber ring?

To clean mold from a bathroom sink rubber ring, first, mix equal parts of white vinegar and water in a spray bottle. Spray the solution onto the rubber ring and let it sit for about 10-15 minutes to kill the mold. Use a soft brush or cloth to scrub the area gently, then rinse thoroughly with water. For tougher stains, baking soda can be added to the mixture for extra scrubbing power.