Squeeze 1 tbsp. of ketchup onto an old washcloth.
Rub the copper door knob with the ketchup-covered cloth. Continue rubbing until the door knob reaches its original copper shine.
Soak another old washcloth in warm water. Rinse the door knob clean. Dry the door knob with a dry washcloth.
Things You Will Need
- 3 old washcloths
- Warm water
- Wear plastic gloves if you prefer not to get sticky.