I bought a Kettleman in September 2016, and by March 2020 such a large area of the grate had rusted through that I had to order a new grate. I was very careful with the second grate. The only utensil I used to clean it was the orange plastic Char-Broil brush. I also used CitruSafe Lemon Scent BBQ Grill Cleaner spray. But the second grate rusted through anyway - I think the porcelain coating started to come off the first time I cleaned. I could live with the porcelain coming off if the metal underneath the porcelain was rust-proof. Now after 3 years I need another grate again. (The rest of the grill is holding up well.)