Preventing Rust on metals includes one main task and that is to keep it clean always. There are many environmental factors that may cause a metal to rust. The easiest method to prevent corrosion of metals is by using a good cleaner that no only cleans the metal surface, but also leaves behind a protective layer that will avoid further corrosion of metals. There are also many more methods to prevent metals from rusting. All of these depend on the environmental conditions and the type of metal being used.