Kraft Foods Group, Inc. announced Friday that the company is voluntarily recalling Kraft and Polly-O string cheese because the products may spoil and change color before their “best if used by” dates.

Approximately 735,000 cases of the impacted products have already been packaged and distributed to customers and retailers across the United States. All of the string cheese products came from a plant in Campbell, N.Y. Their code dates range from October 25, 2013 to February 11, 2014.

The following Kraft string cheese varieties have been affected:

Kraft Mozzarella String Cheese

Kraft Low Moisture Part Skim Jalapeno String

Kraft Low Moisture Part Skim String Cheese

Kraft Low Moisture Part Skim

Kraft Barbecue String Cheese Twists

Kraft Italian Style Pizza Cheese Twists

Kraft Low Moisture Cracked Black Pepper String Cheese

Kraft 2% Natural String Cheese

Kraft Low Moisture Part Skim Tomato Basil String Cheese

Kraft 2% String Cheese

Polly-O Mozzarella String Cheese

Polly-O Low Moisture Part Skim String Cheese

Polly-O Barbecue Cheese Twist

Polly-O Italian Style Pizza Cheese Twist

Polly-O Low Moisture Part Skim Black Pepper

Polly-O 2% String Cheese

Polly-O Low Moisture Part Skim Jalapeno String Cheese

Polly-O Low Moisture Part Skim Tomato Basil String Cheese

Poly-O Low Moisture Part Skim String Cheese Value Pack

Polly-O String Cheese 1 oz 48 count

No other Kraft cheese products are being recalled at this time.

This isn’t the first time Kraft string cheese has been in the spotlight. Last year, the company had to recall its Jalapeno-flavored string cheese because of hazardous packaging. On some of the products, the plastic from the outer package didn’t separate from the cheese, meaning conusumers risked choking on the plastic.

Kraft says people who purchased the affected Kraft or Polly-O string cheese products may either exchange them or get a refund by calling 1-800-816-9432 between 9 a.m. and 6 p.m. EST. For more information on the recall and a complete, detailed list of affected products, visit FDA.gov.