How can you disinfect tiles without fading the grout?

To disinfect tiles without fading the grout, use a mixture of warm water and vinegar or a mild dish soap solution. Avoid harsh chemicals like bleach that can discolor grout. Apply the solution with a soft cloth or mop, and rinse thoroughly with clean water to remove any residue. For tougher stains, consider using a baking soda paste, which is gentle yet effective.