What is the primary use of contact insecticides or miticides?

The primary use of contact insecticides or miticides is to kill pests immediately upon contact. These types of pesticides function by targeting the exoskeletons or the respiratory systems of pests, leading to rapid mortality. They are particularly effective for controlling insect infestations when applied directly to the pests, as the active ingredients penetrate the cuticle or affect nervous system functions.

Contact insecticides are often used for quick knockdown of visible pests, making them ideal for situations where immediate action is required to manage populations effectively. This immediate action contrasts with other pest management strategies that may focus on preventing pest populations or suppressing their breeding, which typically involves treatments that take longer to manifest their effects. Additionally, enhancing plant growth is not a function of contact insecticides, as their primary role is pest control rather than promoting plant health directly.