How do rodents spoil food?

Rodents spoil food primarily through contamination, as they can carry pathogens and bacteria on their fur, feet, and saliva. They often gnaw on food items, leaving droppings and urine that introduce harmful microbes, which can lead to foodborne illnesses in humans. Additionally, their nesting behaviors can create unsanitary conditions in food storage areas, further compromising food safety. Overall, their presence can render food unfit for consumption.