We get a lot of tips from our TV viewers and web visitors. Here are a couple for cleaning metal around the house.
Ketchup cleans Copper. Really. There is acid in the tomatoes that just shines up that copper.
Limes cleans Brass. Actually Ketchup and Lime both work because of the natural acids.
Toothpaste cleans Silver. Toothpaste is actually a bit abrasive and will polish up anything that needs just a bit of cleaning grit.
Keep them coming but send photos with the suggestions and all the information I might need to test the suggestion.