Originally Posted by gr8cards
I have cream colored grout that had gotten especially dirty in traffic areas. I bought a little electric steamer ($40) and used the brush tip along with a little spray bottle of diluted Mr. Clean with ammonia. I did it all in one day spurred on by the fact that the cleaning rag I used to wipe each section after steaming was "black" and the grout looks like new. I didn't seal it, but have done little touch ups when needed. Get a steamer.
What steamer do you have? I have one that is a steam mop, Shark brand I think. Is yours hand held? Mine isn't. I'd be willing to give it a go for $40. I just want it clean!