Diflubenzuron solution is widely used as an insect growth regulator in agriculture to control pests in crops such as fruits, vegetables, and cotton. It works by inhibiting the formation of chitin in insect larvae, preventing them from developing into adults. This makes it effective against a range of pests, including caterpillars, beetles, and flies. Additionally, it is used in forestry to manage defoliating insects and in aquaculture to control parasites in fish farming. Its targeted action minimizes harm to beneficial insects, making it a preferred choice in integrated pest management systems.