Here is an article about dog flies and control with many references.
http://edis.ifas.ufl.edu/pdffiles/IG/IG13300.pdf
As I stated in an earlier post, this was a major problem dependent on the wind conditions in Long Beach Island New Jersey were we vacation in summer, and they installed fly traps and it drastically reduced the fly population. It was quite evident in a beach community called Holgate (part of LBI) that we used to call Helsgate because it was near a tidal marsh and you couldn't get out of your car without being attacked by flies. Now we see very few.
The traps look like boxes. I am not sure exactly how they work, but apparently the USDA has a brochure called "How to Control House and Stable Flies (Dog Flies) without Using Pesticides" and the above article also has many references to articles about these traps.
https://listserv.umd.edu/cgi-bin/wa?A2=ind9502&L=dairynew&P=392
This is an excerpt of the USDA brochure. I have yet to find that one on-line yet.
The traps along with controlling what attracts the flies in the first place sounds like a great strategy!
Pitching this to the local government and residents as an alternative to pesticide sounds like a plan.