I've used my WSM maybe 10 times since I bought it new from Amazon. When I'm done, I take both grills and soak them in a tub with hot water and a few squirts of Costco dish soap. I let them soak anywhere from a few hours to overnight. Then I use a scrubber simillar to this one to clean the grills: http://tinyurl.com/bqc83zy. Other than a few squirts of dish soap, I haven't used any chemicals on the grills. Well, today I noticed that it appears the plating has rubbed off the grills as there are spots where the grills are now a coppery color. I would think the grills would last longer, even though I've been using a scrubber. Is this normal? Should I be cleaning the grills another way? Thanks for your comments, everyone!