Cleaning tile grout

[bcschrand]

The grout between the tiles in our Motorhome has become very dark. The grout does not appear to be the same as what is used in construction in homes. I am concerned to use the products that are sold for cleaning grout in a home. Does anyone have a suggestion for cleaning it?

[2012Coleman]

I read about these brushes you use with a cordless drill here. Bought one and will try it out in our home shower. Might work for your application.

[BarneyS]

Moved to Tech Issues forum from DIY.

[azdryheat]

I bought a steamer to do the grout in my home and it works better than any cleaner I've tried and it's easy. May work for you.

McCulloch

[Dick_B]

We don't have that tile but you might try a paste of Soft Scrub and a toothbrush in an inconspicuous area. I use Oxyclean paste at home.