Rust-Oleum MS Phosphoric Acid Cleaner is a powerful 1-gallon solution designed for effective cleaning and rust removal. This cleaner is ideal for preparing surfaces before painting or coating, ensuring optimal adhesion. The phosphoric acid formula penetrates and dissolves rust, grime, and mineral deposits, making it suitable for various applications. Safe for use on metal and masonry surfaces, this cleaner is a reliable choice for both professional and DIY projects. Its easy-to-use design allows for efficient application, ensuring your surfaces are clean and ready for finishing.