Description: Wenger Feeds, LLC Founded in 1944, Wenger Feeds is a manufacturer of poultry, swine, and dairy feeds headquartered in Rheems, PA and serving the Mid-Atlantic region. Wenger Feeds operates mills in Rheems, Mount Joy, Benton, Lancaster, Spring Glen, Shippensburg, Martinsburg, and Muncy, Pennsylvania and Massey, Maryland. The company also operates a truck garage in Elizabethtown, PA. Wenger Feeds customers provide dairy, eggs, poultry, and pork food products to the Mid-Atlantic region, an area that comprises nearly one fifth of the U.S. population.