What is an example of non-chemical control of public health pests?

The example of non-chemical control of public health pests is the removal and proper disposal of trash. This approach targets pest management by eliminating breeding sites and food sources that attract pests, thereby reducing their population and preventing infestations. Proper waste management is a critical component of integrated pest management (IPM), focusing on environmental management rather than relying solely on chemical solutions. By keeping areas clean and free of refuse, pests such as rodents and insects are less likely to establish themselves in an area, contributing to overall public health safety.

In contrast, spraying insecticides and using traps and baits involve chemical usage or specific devices aimed at pest control, which do not fall under non-chemical methods. Setting up barriers can also be considered a physical method that may involve some materials that could be treated with chemicals, making it less fitting as a strictly non-chemical control strategy. Thus, the chosen answer emphasizes the importance of sanitation and waste management in controlling pests without the use of chemical agents.