With the pyrethrum... you kill the roaches right there in front of God and the client... whereas this starch and fluoride- leave it around, the roaches eat it... come back a few days later, they're running around fat as hogs.
살충제를 사용하면 고객이 보는 앞에서 바퀴벌레가 족사하지 하지만 전분과 불소를 사용할 경우