My hubby does this at least 2 - 3 times a week...we don't have a dog because we don't want the work involved in properly taking care of one...why would we want the work of cleaning up after the neighbor's dog??...we have a leash law in our city...the neighbor's ignore this too...they open their side door and let the dog run and do it's business wherever...one of these days, we'll call animal control...I just hate to do that to the dog though because it doesn't know any better...the neighbor does!
If your city has a leash law it might also have a poop law. I live in the county but I think the city has fines for not picking up poop. I have also seen other cities that have such laws.