Which soap use in removing black dots?

To effectively remove black dots, often caused by dirt or mold, a soap containing antibacterial or antifungal properties, such as castile soap, can be effective. For tougher stains, a mixture of dish soap and baking soda can help scrub away the residue. It's important to test any cleaning solution on a small area first to ensure it doesn't damage the surface. Additionally, regular cleaning can help prevent the buildup of black dots over time.