The steam cleaner softens the dirt and mildew that hardens on top of the grout so it can be washed away easily. Steam cleaning can be harmful to grout only if chemicals are poured into it along with water. Plain water vapor does not have the ability to damage something as hard as grout.
Secondly, how do you steam clean dirty grout?
Considering this, how do professionals clean grout?
If you want to clean grout without exposing yourself to toxic debris, use white vinegar. White vinegar and water mixed with a 1:1 ratio are very effective at removing stains from grout. Grout commonly comes in the form of a paste-like solution that fills the gaps in between tile.
Is steaming floors better than mopping?
Steam mops can sanitize your flooring, while traditional mops may be better for spills and quick accidents.