Workshop Hero WH570295 Metal Rescue Rust Remover - 5 Gallon Pail Easy to use, virtually no labor involved (no scrubbing, dipping, brushing or other agitation) Just soak the part in a plastic container for 5 minutes - 24 hours depending on the severity of the rust It is safe - no acids, no caustics, no health risks, non-toxic, safe on skin Safe for drains or sewer systems (check local laws for compliance) Does not compromise any mechanical properties or functionality of metal