I finally got around to cleaning the tile and grout in my bathroom, and it was way more satisfying than I expected. Years of soap scum and mildew had turned the grout a sad grayish-brown, making the whole room feel dingy. Using a stiff brush and a specialized grout cleaner, I scrubbed each line by hand. After rinsing, the tiles looked brighter and the grout actually looked like its original white color again. It's not a fun job, but the difference is huge, and now I'm motivated to keep up with… tile and grout cleaning