Treehouse Foods is recalling dozens of store-brand frozen waffles sold at Walmart, Target, Harris Teeter, Publix, Food Lion, Tops, and more, over concerns over listeria contamination. The company issued the recall voluntarily, and says that routine testing at one of its manufacturing facilities identified potential listeria contamination; there have been no confirmed reports of illness linked to the frozen waffles. Treehouse Foods is asking anyone who’s purchased the products included in the lengthy list on their website to throw them out or return them to the retailer for credit.