You can clear black tiles in an easy manner. The black tiles that come with a matt finish can work well for walls and floors to conceal dirt and dust very well. But if you pick glossy tiles, you will have to make much more effort. For this, you can use vinegar or any other liquid laundry detergent on the tiles, and let it stay on for a few minutes. Next, take a clean cloth and wipe it, before rinsing with running water. If there are stubborn stains, then you can always go for trisodium phosphate or a paste of baking soda and vinegar. Whatever you do, don’t use a tile scraper because it will cause a lot of damage.