What a horrible position to be in -  neighbors out here retaliate if you complain , not chickens but, free ranging dogs and cats that   "carp" all over my property and I'm tired of ruining my shoes- finding it.
Their dog  poops like an elephant and it takes 3 piles at a time to empty her out.
Hey, they don't pick it up in their yard either and they walk around BAREFOOT  in their own minefield. One son was in trouble with authorities from the time they moved in. He    bought a neighbors truck and then took the doors  off and drove around in that.
After  fines for that  - the son displayed a dead squirrel on the front of the truck. Got fined for that. Also endless drug parties  where car after car would stop briefly at their house, run in and run out, for hours at a time.  Yes, mother was home.
 
If I could afford a solid 6 foot tall fence I would have it.  But I suspect  he would cut holes in it to see what's doing on  or burn it down.  I've will have   been here 50 years in September.  They are the fourth or fifth family to live here in that period of time.
Sorry I have no advice for you, I can't handle the problems I am having.
PS their dog is wild as the wind but, very sweet. They got her from a  shelter and was up for her last day of freedom when another brother adopted her. She was turned in for killing chickens and fighting other dogs.