Permethrin sprays a health hazard on airplanes, but still sold for children's bedding. Lice sprays may vary from manufacturer to manufacturer but contain the pyrethroid known as permethrin. The Association of Flight Attendants (AFA) warns of the risks of permethrin exposures to humans and is waging a war to stop the spraying of permethrin on airplanes, while permethrin-containing shampoos and sprays are still marketed for children and families, their bedding, furniture and other objects in the home, school, and child care settings. The National Pediculosis Association has since its inception warned against the use of pesticide shampoos and sprays. Why Not To Spray: Head lice are primarily transmitted by person-to-person contact rather than by person-environment-person …