Wet the lace with water, ring out excess. Place in white vinegar just to get it wet, ring out. Place rusted objects on the lace or wrap lace around rusted objects. Place in a plastic baggie - check from time to time to see the color change some will be subtle some will be very bold. remove rusted objects and rinse out vinegar with water and a little soap. Put it in the dryer or hang it to dry iron if needed. Very cool. This works best on cotton.