Park officials will use flags to point out dog poop on the Quartz Ridge trail at Piestewa Peak in order to warn hikers of the mess.

Members of the Dartmouth Natural Resources Trust have taken a unique approach to stop people from leaving pet waste behind on their properties, primarily at Trails Destruction Brook Woods.

Springfield, Missouri, is planting tiny flags in dog poop to remind residents to pick up after their pets in a campaign to clean up waste in the downtown area.

SPRINGFIELD, Mo. (AP) — Officials in a southwest Missouri city are planting small flags in piles of abandoned dog poop as part of a campaign to get residents to clean up after their pets downtown.

SPRINGFIELD, Mo. (AP) — Officials in a southwest Missouri city are planting small flags in piles of abandoned dog poop as part of a campaign to get residents to clean up after their pets ...

Officials in a southwest Missouri city are planting flags in piles of abandoned dog poop as part of a campaign to get residents to clean up after their pets. AP NYC sanitation officials, take note ...

SPRINGFIELD, Mo. (AP) — Officials in a southwest Missouri city are planting small flags in piles of abandoned dog poop as part of a campaign to get residents to clean up after their pets ...

Pick up the poo: Arizona park rangers to use flags to point out irresponsible dog owners. Apr 29, 2016, 5:30 AM (KTAR Photo/Mike Sackley) (KTAR Photo/Mike Sackley) Share . BY MIKE SACKLEY.

Officials in a southwest Missouri city are planting small flags in piles of abandoned dog poop as part of a campaign to get residents to clean up after their pets downtown.