Most fishing hooks are meant to last long, they can be reused as many times as possible. That being said, if some of the finishes get nicked then rust can occur. However, if you would like to attempt to restore some of your old rusty hooks, you can throw in some elbow grease and use sand paper to scrub it off. If this doesn’t result in hooks as clean as you would like, you can later soak the hooks in apple cider vinegar until the rust dissolves.