I know that on pennies that ketchup works great on getting the corrosion off of them. In fact it also works great on copper bottom pans too.
I also collect rocks and the two things that I have found work well for cleaning them up, but aren't too harsh are: 1) a mixture of vinegar and baking soda. Put the baking soda and whatever you are cleaning in the dish first and then pour the vinegar over it. It will foam but is not dangerous in any way. 2) Denture tablets work really well also. 3) I also found a new one for silver the other day - get a container that will hold whatever you want to clean. Put a piece of aluminum foil in the bottom of the contain. Pour in enough HOT water to cover the object. Then sprinkle regular table salt into the hot water. It is amazing to watch it come clean.
So those are all of my wise ideas.
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Tonya
American Born - Texas Proud
America's Military - Get Behind Them or Feel Free to Get in Front of Them
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