While some stains can be rinsed away with a pressure washer tougher stains such as rust require an acid based cleaner like muriatic acid.
Removing rust stains from concrete with muriatic acid.
In these products the muriatic acid is mixed with a stain color.
Mold rust and other stains can mar the clean beauty of your concrete lessening the visual impact and even the curb appeal of your property.
The strong acid can actually eat away surfaces.
Use muriatic acid to clean rust from porcelain fiberglass bricks and tiles.
Muriatic acid is commonly recommended to clean and remove rust stains from concrete.