Blot up with a clean cloth. Rub in the mixture, blot the stain and rinse with water. Let stand for a few hours, then sweep up. Dip the copper in warm vinegar, then sprinkle salt on the piece and scrub with a soft cloth. Rinse all with clean water.
Silver cleaning Baking soda and water or buttermilk make fine silver-soaking solutions.
The fine abrasives in toothpaste will also brighten silver jewelry with mild brushing. Rinse pieces well with water and dry with a soft cloth. Rust remover Vinegar's weak acid works well on rust stains. Warm vinegar and scrubbing will remove rust from dishes, sinks and teapots. Wood furniture polish Look for products containing pure oils like lemon oil, tung oil or almond oil without petroleum distillates.