What chemical is put on plants to kill bugs?

An active contact ingredient is the chemical that is put on plants to kill bugs. It may be applied as an aerosol or as a spray on plants and as granules or sprays at the vegetation's base. The particular name will depend upon the bug that is to be killed even though pyrethroid is a popular choice as the synthetic equivalent of the chrysanthemum-derived, eco-friendly, Mother Nature-made, plant-based pyrethrin.