The common camco rods are either aluminum or magnesium and are so noted on the package. They look the same in the package. It’s a little harder to find the magnesium rod but they do exist. I’m getting two to three years out of a rod but as previously posted, I often drain between trips and have not had stinky water unless we get a water source high in sulfur. I bought my last magnesium rod in a camper supply place.
Strike while the iron is hot. Live every day as if it were your last and one day you will be right.