Playing devils advocate here
I did the similar thing recently around here, all fine.:)
Here's why that's not a good idea.
I've got that answer few days ago, which made me reconsider doing what you proposed. Responsibility, I am one, those who bring garbage every day are more numerous. So it's not my trash, it's not my duty to go after adults and clean up after them (I can after children ;) until they learn), I don't see any effect in a 1:100 fight except to turn out to be a fool par excellence.
Unfortunately, the community wouldn't appreciate it, and that's the biggest problem because if I knew that more garbage wouldn't be dumped there, I would organize a team (as there are people who would join).
And the biggest problem of all the problems is that the state itself is not interested in the excessive preservation of ecology, my country is really beautiful, a real gem of nature, but as far as people have reached, nature has been polluted, many birds have left their former inhabitants, you understand what I'm talking about. . the list goes on and on.