I'm pretty careless and sometimes spill a bit of water on our floor. When I do, some strange white layer appears on the floor within a minute. I took some photos to demo. Usually it gets much much worse, but I didn't want to leave the floor wet for long just to demonstrate.
If you leave something moist on the floor for an hour without noticing, it can be almost like someone drew on it with chalk. Attempts to scratch it off result in some weird grime peeling off, which I assume can't be good as it must be a part of the flooring.
What's the proper way to remove the layer after a spill?