What kills lice? Information on head lice products. Governing bodies/ Categories (FDA) Food and Drug Administration. This agency governs head lice products that are meant to be used on the human body. Any claim that may persuade a customer to believe that the product will kill would make the product a pesticide. Products that claim to “kill” head lice are called pediculicides, and are classified as drugs according to the FDA. Licenders all natural shampoo breaks the shell of the louse with natural enzymes. This enables the bug and its eggs to be combed out easily for effective head lice removal.