Last year I was working getting these black little specs off front window
and door pane. I actually scratched the window storm pane. Piece of
aluminum no good for scraping. Razor ok, no scratches. They are really
stuck on good. Yes, I got mulch in the area. From reading, certain mold
lives in mulch which shoot out these projectiles. Bet that would hurt my
eye. Thought it might have been eggs.

Greg