What does the term "pest infestation" refer to?

The term "pest infestation" specifically refers to the presence of pests that pose potential health hazards. This definition emphasizes the detrimental impact certain pests can have on food safety and public health. Pests such as rodents, cockroaches, and certain types of insects can contaminate food supplies, spread diseases, and undermine sanitation efforts in food handling and preparation environments.

While the other choices mention insects or wildlife, they do not highlight the concern associated with health risks. Harmless insects or regular seasonal visitors do not typically threaten human health or safety in the context of food handling. A temporary invasion of wildlife, while potentially problematic, does not carry the same level of risk as a true pest infestation that can lead to foodborne illnesses or unsafe food handling conditions.