If kitchen rags or cloth oven mits have been used in a non-kosher kitchen, may they be used in a kosher kitchen after they are laundered? Or do they become non-kosher (for example, from contact with a hot non-kosher stove or hot non-kosher food) and require kashering? If so, how does one kasher cloth? Does it make a difference if the oven mits have some rubber or plastic on them, as opposed to being made solely of cloth?
I am going to take the liberty of assuming rags and oven mitts are not any different than table cloths.
I asked the Star-K about kashering table cloths for Pesach, and was told that a table cloth can become "treif" and becomes pareve by putting it through the laundry machine.
I imagine the same would apply to any cloth or similar material.