Why cans with swollen ends should be rejected and sent back to the suplier?

Cans with swollen ends indicate potential spoilage or gas buildup inside, often due to bacterial growth or chemical reactions. This condition poses a risk of food contamination and can lead to foodborne illnesses if consumed. Additionally, swollen cans may compromise the integrity of the packaging, making them unsuitable for sale. Therefore, it's essential to reject and return these items to the supplier for safety and quality assurance.