With 90% of the U.S. population living within 10 miles of a Walmart store, recalls of products they sell can have widespread effects. Labeling mistakes, safety concerns and contamination can all cause food recalls. Prescriptions and other products can also be recalled.

Tri-Union Seafoods of California is recalling tuna cans that were sold in Trader Joe's and Costco, among other locations, due to the risk of botulism.

Certain tuna products may have defective lids that could lead to "a potentially fatal form of food poisoning," FDA notice states.