Which method for eliminating pests does not focus on chemicals but on environmental conditions?

The method for eliminating pests that focuses on environmental conditions is community sanitation efforts. This approach emphasizes maintaining a clean and healthy environment to prevent pest infestations. By managing waste, removing standing water, ensuring proper disposal of garbage, and maintaining overall sanitation in communal areas, the environment becomes less hospitable to pests. This method not only reduces the available resources for pests but also addresses broader public health concerns, promoting safety and hygiene within communities.

In contrast, biological control involves using natural predators or parasites to manage pest populations, which can be highly effective but does not directly alter environmental conditions. Physical traps capture or kill pests without relying on chemicals, but they do not modify the environment itself to disrupt pest life cycles. Organic pesticides, while less toxic than conventional chemicals, still involve the use of substances aimed at controlling pests rather than focusing on an environmental approach. Thus, community sanitation stands out as the method that directly targets and modifies the environmental factors that contribute to pest problems.