Porcelain, as we know it, has been around for centuries. In the 1200s, it was shaped into fine pottery and used to create beautifully crafted vases and bowls. Now, the durable material has found ...

I decided to try Zep on the grout of the porcelain floor tile in my bathroom. The bathroom was renovated a few years ago, before I moved in, so I estimate that it's about four years old.