I had this problem in the past. I had a small webcam, and ended up finding out which neighbor it was. I taped a nice letter on their doorkindly asking them to pick up after their dog and reminding their teen kids to do the same, without identifying myself… It happened again a few more times, I taped another note to their door reminding them again, nicely.
Then it happened again…
Finally, one night, I got a scooper, put the poop on a paper plate, put in the paper plate on the doorstep and taped another note. This time saying.
“Here’s your dog’s poop. Gross isn’t it? Please pick up after your dog. If you don’t I will, and leave it on your doorstep or if you prefer. somewhere else, like on your car.”
Didn’t happen for a long time. Then one time it happened again. Webcam said it was the same household… In the middle of the night, I got a pooper scooper, picked it up and flung the damn poop on their driveway…Funny thing is that the next day, as I was driving to work, saw the soccer mom out side scooping and washing the drive way..
Never had a problem again. (And the neighbor eventually moved out.)
Really, I’m a nice guy.. I asked a dozen of so times. And yes, I saw either her, her boys, her hubby walking the dog, the dog taking a dump, and not picking up on my webcam…every time…