My wife spends 4-6 at Atlantic Watergate most summers. On a regular basis, we have watched renters and owners alike, not picking up after their dogs. Our parking space is littered with dog feces everytime we arrive. If we cannot get people to clean up after their dogs around our living areas, there is no way we want them using our beach as a personal dog toilet.
If they dont respect our living area, perhaps it is time to penalize/fine or ban renters from bringing their dogs all together.
Dogs on the beach is a major health hazard. The state park is next door, they can take them over there or, dont bring them at all.