fly sprays usually consist of deodorized kerosene, perfume, and an active insecticide. in some cases, they merely stun the flies who may later recover and begin buzzing again pyrethrum powder/10 oz deodorized kerosene/80 fl oz methyl salicylate/1 fl oz fly spray
配制方法:
mix thoroughly by stirring from time to time; allow to stand coveed overnight and then filter through muslin. this spray is inflammable and ahould not be used near open flames.