Follow others tips on removing the rust but you will need to give a BIFL knife maintenance FL and handwashing is a simple essential. Dishwashers are horrible for knives. They dull and rust. I would strongly advise handwashing these if you want them to last more than a few year.

The chemical solutions and resharpening will take more time and effort than a simple handwashing while also destroying the knife faster(wearing through steel from sharpening and chemicals).