Thiamethoxam 25% WG is a systemic insecticide of the neonicotinoid class. It is used for the control of sucking insects, termites, and some soil-dwelling insects in a variety of crops, including cereals, vegetables, and fruit trees. It is highly toxic to bees, and should not be applied to blooming crops or weeds that are attractive to bees. It acts by disrupting the nervous system of the target insect.