Thiamethoxam is a systemic insecticide and neonicotinoid class of chemicals used to control a broad spectrum of insect pests in agriculture, horticulture, and other settings. It is known for its effectiveness against various types of insects, including aphids, whiteflies, thrips, and beetles. Thiamethoxam belongs to a group of chemicals designed to disrupt the nervous systems of insects, ultimately leading to paralysis and death.