Mason Farm and Ranch
Songster
OP said her yard was half in the county, half inside the city limits and the apartments are inside city limits. If a person moves into the apartments in the city, they have the expectation that they wouldn't have chickens pooping in the apartment complex's common area- the apartment dweller's yards. If it was OP's dogs leaving OP's yard and pooping in the neighboring apartments common area/yards, would that make the problem clearer to navigate?
650 people? No...you moved to the country and you're lucky a horse doesn't walk through your house looking for snacks. A cow in the road, making you late, wouldn't be surprising.
650 people do NOT make a city.