Restaurant Has Severe Drain Fly & Mouse Problem in Manville, NJ As you can tell, this restaurant in Manville, NJ has a severe drain fly infestation. Related Content: Article: 6 Ways to Help Control Flies in Your New Jersey Home Article: A Guide To Drain Flies Case Study: Drain Flies Infest Home in Matawan, NJ Press Release: Stay Alert For Invasive Species Even As Temperatures Drop Back to Previous Page Back to Videos