About 735,000 cases of Kraft and Polly-O string cheese products with "Best When Used By" code dates between Oct. 25, 2013, and Feb. 11, 2014, are affected by the recall, a statement from Kraft said.
No other Kraft cheese products are being recalled.
"As you may know, these are natural cheeses that contain no added preservatives, and it’s not unusual for cheese to spoil over time. But in this situation, we saw spoilage occurring before the “Best When Used By” Date. That is not acceptable to us. So we knew the right thing to do for our consumers was to voluntarily recall the affected product," Kraft said in a statement.
The affected product was shipped to stores across the United States.