Botanical Pesticide Additives for sale 銆€銆€What is piperonyl butoxide? 銆€銆€Botanical pesticide piperonyl butoxide (PBO) is a man-made pesticide synergist. By itself, PBO is not designed to harm insects. Instead, it works with bug killers to increase their effectiveness. PBO is often combined with natural pyrethrins or man-made pyrethroids. 銆€銆€Specification Common...