The company says the recall is based on Food and Drug Administration sampling of the frozen mice. The products were shipped to all states except Hawaii, and the feed was available for purchase through pet stores, mail order and direct delivery.
A spokeswoman for the Centers for Disease Control said the agency is investigating the illnesses, which began in January.
The most common symptoms of salmonella are diarrhea, abdominal cramps and fever. It can be life-threatening, especially to those with weakened immune systems.