Lindane molecules, computed-generated space-filling model (left) and ball-and-stick model (right). Lindane is an organochlorine compound that has been used both as an agricultural insecticide and as a pharmaceutical treatment for lice and scabies. It is also a neurotoxin with harmful effects on human health and the environment. Atoms are represented as spheres and are colour-coded: carbon (pale grey), hydrogen (dark grey) and chlorine (green).