Spills are inevitable, and even on a well-sealed surface, some stains may occur if not treated properly. Make sure to wipe up any liquids or sauces (especially if they’re acidic or oily) to avoid permanent damage. Always patch test the concrete before using any cleaning solution. Over time, your product may develop some impurities. Though marks and stains can give the concrete character, the surfaces can be refurbished to close to their original state if you wish.