To clean aluminum foil facing, start by removing any visible debris. Use a damp cloth or sponge with mild dish soap to wipe the surface gently. Avoid abrasive materials that could scratch the foil. If there are stubborn stains, you can use a mixture of water and vinegar (1:1 ratio) to dampen the cloth. Wipe the surface and let it air dry. For baked-on food, you can use a plastic scraper or a soft nylon brush to gently remove it. Always remember to handle aluminum foil carefully to prevent tearing or damaging the surface.