cleaning grout between marble tile

Q. We have 12-by-12 marble tile as our shower surround and bathroom floor. We use a special, non-acidic marble cleaner on the tile, but it does not seem to work on the white grout. Can you recommend a product or technique for cleaning grout between marble tile?

Hi Jill,

Is the grout sanded or unsanded?

Sanded grout is harder to clean but our mb-2 is a great grout cleaner. The trick is dwell time and agitation.

Use a soft but firm grout brush and scrub the product(dilute 50/50) onto the grout.

Leave on for ten minutes rinse and repeat.

Stu Rosen