glass
be careful with the steel wool--my so took a dislike to the rainex she had put on her w/shield. she used a scotch brite pad and glass cleaner--no more rainex, but fine scratches that really bothered at nite with oncoming headlights! btw, sears has glass polishing kits in their automotive tool catalog that i receive 2-3 times a year. haven' tried them, though.
be careful with the steel wool--my so took a dislike to the rainex she had put on her w/shield. she used a scotch brite pad and glass cleaner--no more rainex, but fine scratches that really bothered at nite with oncoming headlights! btw, sears has glass polishing kits in their automotive tool catalog that i receive 2-3 times a year. haven' tried them, though.