After conducting a random sample test of Natural Balance 5 lb and 28 lb bags of sweet potato and chicken dry dog food, the FDA determined the pet foods to be positive for Salmonella contamination. Products that were affected have a “Best By” date of June 17, 2011 and were sold in pet specialty stores in Alaska, Arizona, Arkansas, California, Colorado, Hawaii, Idaho, Illinois, Iowa, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Montana, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin and Wyoming. Natural Balance has sent a letter to all pet stores and other sellers who have purchased these products and encourage them to return the products to their place of purchase. The recall notice states that Salmonella can affect both animals and humans who have handled the pet food. Animals with salmonella may become lethargic; have diarrhea, fever or vomiting. Less noticeable symptoms may be decreased appetite and abdominal pain. Pet owners are being urged to contact their veterinarians if you notice any symptoms.