I know some higher end horse stables have fly systems that keep them away. My daughter does horse shows, and some of the nicer places we go have no flies. Not sure where to look for this, but Google might turn something up.
AC Lockyer said
Jun 1, 2015
I have seen plenty of this but have no idea what could be a preventative. Sorry I could not be more of a help.
So I know you guys have seen fly poop on siding before. Almost looks like artillery fungus.
Do you know of something my customer can do to keep the flies from pooping on newly cleaned siding?
ACX