Acids: Rust removers containing acids like phosphoric, citric or oxalic acid work by breaking the chemical bond between iron and rust. The acids dissolve the rust while leaving the metal intact. Acid-based removers are effective but can damage surfaces if not used carefully as directed. They also require thorough rinsing to prevent future corrosion. Caustics: Caustic rust removers ... https://www.feedsfloor.com/marketing/rust-remover-effective-solution-remove-unwanted-rust