If you are buying a stainless steel grill, one of the key things to look for is good stainless steel. There are a lot of grades of stainless steel, and the lesser grades will rust if they are left out - and you know you are going to leave your grill out. So how does a simple person determine what's good stainless steel and what's not? By using a magnet. Magnets will stick to lower grade stainless steels, but they will not stick to higher grade stainless steels. So if you are considering a stainless steel grill, check it first to see if a magnet sticks to it. If it does, keep shopping.