What describes a pesticide that remains effective for an extended period after application?

A pesticide characterized by its long-lasting effectiveness after application is known as a residual pesticide. These pesticides contain active ingredients that remain in the environment and continue to exert their pest control effects over time. This property is particularly beneficial for managing pests, as it allows for prolonged protection against infestations without the need for frequent reapplication.

In contrast, options like non-residual pesticides do not stay active in the environment for long periods, making them suitable for situations where immediate control is needed but not necessarily sustained effectiveness. Temporary and short-term pesticides also imply limited duration of pest control and would not provide the extended efficacy that residual pesticides do. Residual pesticides are integral in pest management strategies, allowing for efficient long-term solutions and reducing the amount of product needed over time.