Our neighborhood has a few walking paths. And we walk along them, from time to time.
A very kind citizen put this “add a used newspaper or grocery bag dispenser for dog poop” dispenser along the trail.
The local parks authority provides their own dispensers, but they have to spend labor hours, the costs of special poop bags and create pollution by a small pickup truck going along the trails to refill the dispensers.
It’s so much better for ordinary people to add their used grocery or newspaper bags to these simple-to-build dispensers!