At which store can you buy Twinkle Copper Cleaner I've tried a few of my local grocery stores and they do not carry this copper cleaner. Can you identify stores in Tucson AZ that do My zip 85742?

Try your local grocery store. It should be next to the silver polish and the brass polish. If it is not there, ask management to add it to their special order list. There are special order vendors who carry this product, and your grocery can get it for you by the special order vendor.