I have the means to buy one in order, from slight musty deposits particularly clean in the shower doors that are made of plastic to the sealing. Secondly, I wanted to try to mold that has collected in one room in a corner and going from the ceiling to the floor, remove. Both have surprisingly good funktoniert. While standing on the instructions that you have to wash away it with plenty of water (that made me skeptical of the wall), the mold fell from the wall only by spray and let soak away. After 1 day, the wall is dry and the smell away. What I can recommend: Especially when you stand in the shower and sprayed, wearing a breathing mask is recommended. I have noted in the product respirator used 4251 FFA1P2D.