Black mould in bathroom grout is not just unsightly; it can pose health risks, particularly in the humid conditions typical of UK bathrooms. Mould thrives in areas with high moisture, such as grout and sealants. Fortunately, cleaning professionals recommend using baking soda, a natural and effective solution for removing these stains. To utilize this method, mix a teaspoon of baking soda with water in a spray bottle and apply it to the affected area, allowing it to soak for 10 minutes. Alternatively, a paste made from half a cup of baking soda and a few teaspoons of water can be applied directly to the grout. After scrubbing gently with a soft brush, rinse the area thoroughly. This method not only removes mould but also helps prevent its return by absorbing moisture. Allow the area to dry naturally to ensure any remaining spores are eliminated.