This natural compound will make the black joints between the tiles white again
The natural compound you're looking for is baking soda (sodium bicarbonate) mixed with white vinegar. How it works: Baking soda is mildly abrasive and alkaline, which helps lift dirt and grime. White vinegar is acidic and breaks down mold, mildew, and mineral deposits. How to use it for grout cleaning: Make a paste of baking ...