What is a 'secondary hazard' in pest management?

In pest management, a 'secondary hazard' refers specifically to the risk posed by non-target animals that may consume poisoned rodents or other pests that have been treated with rodenticides or pesticides. This scenario is particularly critical because it highlights an unintended consequence of pest control measures.

When rodenticides are used, they not only affect the targeted pests but can also have detrimental effects on other wildlife that may forage on dead or dying creatures that have ingested the poison. This unintentional exposure can lead to illness or death in those non-target species, which can include pets, raptors, and other scavengers. Recognizing and understanding this risk is essential for implementing responsible pest management practices that mitigate harm to the environment and non-target wildlife.

The other choices touch on important aspects of pest management, such as the potential return of primary pests, professional liabilities, and the spreading of disease; however, they do not encapsulate the specific and commonly recognized concern associated with secondary hazards in pest management.