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Elijah Nouvelage, Associated Press
In this March 23, 2012, photo a discarded bottle filled with urine lays on the side of Highway 85 near Williston, N.D. Litter has become an escalating problem as the rush to tap vast caches of crude escalates in North Dakota. As the number of trucks coming to the oil mecca increases, so does the trash.

TIOGA, N.D. — Residents living near western North Dakota's booming oil patch are struggling to combat a problem that has grown with the region's resource production: "trucker bombs," urine-filled jugs tossed by truckers that litter roadsides.

North Dakota is now the nation's third largest oil producer.

Some see the problem as a lack of respect by the truckers. But industry officials note that despite the increase in jobs and truck traffic, there are few truck stops and the state has only three rest areas where a more dignified disposal method might be employed.

State troopers say enforcement is tough because most truckers have the sense not to toss anything in view of a squad car. Volunteers say it is difficult to convince people to participate in cleanups when the litter includes human waste.