Here is a round up of tips for cleaning copper objects all around your home, including with natural cleaners, and with products designed specifically for cleaning this metal.
How to Clean and Care for Copper Cookware
3 Ways to Clean Copper Sinks - wikiHow
How to Clean a Copper Sink
A Guide to Copper Cookware: The History, How to Shop for It, How to Clean It, and More
How to Clean and Care for Copper Cookware
Copper Maintenance: How to Keep Your Copper Decor Looking Like New
How to Clean and Polish Copper for a Lasting Shine - Clean Copper
Copper Maintenance: How to Keep Your Copper Decor Looking Like New
All-Natural Copper Cleaning Tip
How to clean Copper Utensils Best Copper Cleaning Method
Proper Care for Barware
How to Clean Copper