We had in the garage massive mold, looked really terrible. This means must simply sprayed (I have plenty sprayed with a pressure sprayer) will leave for a moment and then rinse with water well. I used to your water wand with Mops of Gardena. The wall looked after like new again (white).
Even now, after more than a year after the application is still not back the slightest mold growth on the machined wall.
