Greenwood High Purity Boric Acid Powder is used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. It is claimed to have antifungal and antimicrobial properties. Always consult your healthcare provider before applying boric acid to any body part. It is irritating to the skin and may cause severe reactions. Boric acid has hundreds of applications that begin in the home and extend to the outdoors. It is one of the most effective and natural insect killer and it is used to kill cockroaches, ants, fleas, termites, silverfish, beetles, wood borers, and other parasites. This product will help you rid your home of these pests by creating a barrier through which cockroaches and other insects must crawl. Puff a light dusting of powder in areas such as behind refrigerators, along baseboards, and in cracks and crevices where roaches have been seen. Take measures to ensure that the powder is kept dry in order to remain effective. Boric acid can kill insects if they eat it. It disrupts their stomach and can affect their nervous system. It can also scratch and damage the exterior of insects. Boric acid can also stop the growth of fungi, such as mold. It prevents them from reproducing.