My shower door frame has calcium scale, and the calcium and lime spray remover says not to use it on anodized aluminum. Do you have any hints?

I'm hoping you can help with my problem. My shower door frame has calcium scale in places, and the popular calcium and lime ...

Snow has returned to the Philadelphia region, and along with it the white residues on streets and sidewalks that result from the over-application of deicers such as sodium chloride, or rock salt, as ...