The Food and Drug Administration says it has again found listeria in the production kitchen of Columbus-based Jeni's Splendid Ice Creams. Two out of 75 swabs taken in January and February came back positive from prep-room and wash room floors. No listeria was found in the company's products. The company has until Monday to submit a corrective action plan. Jeni's shut down twice last year after listeria was found in a pint of ice cream in Nebraska and in Jeni's kitchen. A second finding on a kitchen floor occurred later that year.