Schreiner’s Sausage Company is voluntarily recalling 28 ready-to-eat meat products from wholesalers, the Arizona Department of Agriculture announced Friday.

Concerns over the potential spread of Listeria, found during an inspection, led to the recall.

The products were sold before December 1, 2014.

If someone has the product in their refrigerator or freezer, the Arizona Department of Agriculture says that the meats should be thrown out or returned to the place of purchase. Listeria is a bacteria that can cause life-threatening infections, especially for people 65 years or older, people with weakened immune systems, and pregnant women.

The following products were distributed in the metro Phoenix area and bear the establishment number “EST 24” inside the mark of inspection produced prior to Dec. 1, 2014 and are subject to recall.