Residents from neighboring counties such as Grundy and Van Buren are driving to Warren County to dump their trash, according to Sanitation Department director Steve Hillis.“It’s a growing problem,” Hillis told members of the county’s Health and Welfare Committee. “It’s also costly. When you are paying that much in time plus the cost of employees and trucks and fuel, it’s expensive to deal with.”According to Hillis, Van Buren County charges 11 cents a pound for trash people dump at its convenience centers.“That’s why a lot of people are coming here from Van Buren County.