Another cleaning question: Marble tile/grout this time.

I have 4 inch Carrera marble tiles in the tub enclosure. We just had it done not even a year ago, and were cautioned by the tile guy not to use ANY harsh cleaning products on the tile. The grout on the bottom (where the tub meets the wall) is starting to go a pink color, and it looks really funky. I've tried all the mild cleaning products I can think of, but it doesn't do anything. Can you recommend something that will fix this but not ruin the tile?

TIA!!!

Re: Another cleaning question: Marble tile/grout this time.

i have carrera marble in my bathroom (floor, not shower) i use my shark steam mop. the marble and grout sparkle after i do it.
def be careful with whatever you use if you dont clean it asap the stain may set and you will never be able to get it out.

Re: Another cleaning question: Marble tile/grout this time.

Try a little baking soda on a toothbrush.

I try to use baking soda whenever I can, to limit the amount of chemicals I use. Sometimes requires a little elbow grease, but it's better for me and the environment.