Very effective space sprays for use against both flying and crawling insects are formulated by using approximately 2% "Strobane" with suitable knock-down agents. It is however, possible to formulate an effective spray for flying insects containing as little as 0.5% of this new insecticide. suitable knockdown agents include: Pyrethrin concentrates Pyrethrin concentrates plus synergists Allethrin plus synergists "Lethan" 384 regular "Thanite" Typical formulations based on active ingredients by weight are as follows. These formulations will far surpass minimum AA-Grade requirements Pyrethrins/0.075 Petroleum Distillate/97.925 "Strobane"/2.000
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