I used to live in a place with a porcelain sink, it almost never had to
but in the places I've lived since, with plastic sinks, the scum builds up
Why? my guesses:
Maybe it's a difference in the water? hard water causes more scum?
possibly, porcelain is smoother microscopically, and the soap/oil sheds
possibly, difference in how fast the sinks drain?
anybody have experience with porcelain sinks, are they better this way?