Merit 0.5% Granular Insecticide (by Envu/Bayer) is widely considered the industry standard for season-long, systemic control of grubs and other soil-dwelling pests.
Longest Residual Control: A single application provides broad-spectrum control for up to 4 months or longer, targeting pests at the root zone where they cause the most damage.
Systemic Action: Powered by Imidacloprid, the granules are absorbed by the plant's roots and translocated throughout the foliage, killing insects that feed on the grass or ornamental plants.
Preventative Power: It is most effective when applied prior to or during egg hatch (typically early summer), stopping infestations before visible damage occurs.