... 1)New type-PURE biological cockroach Killer 2)Non-toxic(even eatable),non-pollution,eco- ... dead) ,cockroach active substances and bait etc.2.The pheromone bait seduce cockroach cluster feeding, making ... cockroaches infected virus, after ootheca pass the virus second generation, producing sustained effect.5.This product belongs ... usually mung size, spacing 30-50 centimeters.2.7-15 days for point, for the ...