I recently had the exterior of my house cleaned...and the guy who did
the work pointed out small black dots (the size of a pencil dot and a
bit bigger). The dots were on the house...on the windows...and on one
of my cars (which parks near the effected area). They do not spray
off with a hose...you have to actually lightly scrape them to remove
them.

The guy told me they were "Shotgun Mold" and that they existed in
areas where the pH was off. I looked it up on the net and saw that it
is also called "Artillery Fungus" or "Artillery Mold"...and that there
really isn't much you can do about it other than keep your mulch dry,
replace it regularly...or get rid of it altogether (which isn't really
an option).

Other than using hot water and high pressure (which i DO NOT want to
do)...or scraping it off (which is going to take paint with it)...is
there anything else anybody can recommend? Any suggestions about
preventing future outbreaks? Any anti-fungul applications that would
work?