Back in March or April I ordered the Maas Metal Polish from their own site (I think? - not sure. I had read something about it in a magazine or on the Internet. We were going to Yellowstone for a month and I could hardly wait to tackle cleaning all the glass and metal inside and out, with this 'easy to use product'. Well, it was not easy! I barely made a small hole in the scum on the glass shower doors, and didn't even make it thru to the glass. Trying to prove to my husband how wonderful it was and I just put myself in a terrifically bad Fibromyalgia attack with pain for days. My hubby tried it on the glass and on metal and said that it worked slightly, but was not worth the terrible hard rubbing it took.