/diy/ - Do It Yourself

>>1129638
I dunno. This picture is actually better than it usually is, it was cleaned to some degree pretty recently. There's usually much more visible mold all over the tile. It's on the wallpaper too. It just keeps coming back every single time we clean it up.

Another interesting one to me is that if I leave a cup of water sitting out overnight, with nothing else nothing else in the cup, mold will have already formed on the surface.