Samples of three batches sold only at Walmart were found to exceed recommended levels of naturally occurring inorganic arsenic, according to the Maple Island company’s recall notice posted on the U.S. Food and Drug Administration website. On Friday, the company announced the recall of three batches of Parents Choice Rice cereal for children because of high arsenic levels in the products. Last year, the FDA put a limit on naturally occurring inorganic arsenic, and in April it announced plans to offer limits on arsenic, lead and mercury in baby food, CBS News reported. About four months ago, Beech-Nut Nutrition recalled a number of rice cereals for children sold nationwide after samples showed arsenic levels too high, CBS News reported. The expiration date and product number are listed on the bottom left side of the package of Parents Choices rice-based baby food, the company said in a statement announcing the recall. Customers who purchased the recalled baby food should either throw it away or return it to Walmart for a full refund, the company said. No illnesses related to the recalled products have been reported so far, according to Maple Island. The baby food company said at the time that it was stopping the sale of the product because it was concerned that it did not meet federal arsenic limits. Studies have shown that reducing exposure to toxic elements is important to minimize potential long-term effects on the developing brains of infants and children, the recall said. Consumers can call Maple Island at 1-800-369-1022 from 8 a.m. to 4 p.m. Central Time Monday through Friday. Sources: Maple Island Inc. Consumer Reports has more information about heavy metals in baby food. This heavy metal has been linked to developmental disorders in children.