My shower tiles in my apartment are kind of nasty, and I've tried spraying them with Clorox Bleach Foamer and also Tilex:Mold & Mildew and then scrubbing with a magic eraser thing. I can try scrubbing longer/harder, but are there any tricks or techniques to make these shower tiles really clean? (Notice the sort of stained tiles in the picture.)

*Click photo for full size*

[![enter image description here](https://i.stack.imgur.com/IVT3Ul.jpg)](https://i.stack.imgur.com/IVT3U.jpg)