The bed nets are treated with a poison to kill mosquitoes.

VOA: special.2010.03.10

Yeah, if they have a race riot round here, I'm gonna kill all the white folks with my poison."

当然，假如他们有那样的种族暴动，我会用毒药除掉他们，“

耶鲁公开课 - 1945年后的美国小说课程节选