How do I clean the black ick off a faux copper kinetic yard sculpture?
I bought this at Costco a few years ago. It started out a dimpled faux copper with some black antiquing. Now, it is covered in some black icky (it's not slimy) not attractive stuff. I'd like to remove this stuff without damaging the original finish underneath. Could anyone help me with what I should use? If I could give it a bath I have a large galvanized tub, but think that might react? Thanks for any help you can offer.