| Using this knowledge, ARS and military entomologists came up with a system for mass delousing of civilian populations. |
| While the commanding officer was away, a guard at Auschwitz used the delousing chemical Zyklon B on some prisoners. |
| The E. P. A. regulates only one component of pharmaceuticals, lindane, an ingredient in delousing shampoos. |
| The development of the Zyklon gas chamber was transferred from sanitary practices of delousing. |
| It seems probable that in the future, synthetic pyrethroids will be of more interest than pyrethrum as possible delousing agents. |
| Among the substances currently being studied for their potential as delousing agents in salmon are the pyrethroid insecticides. |
