The naturally derived compounds, abamectin, extract of neem seed (Azadirachta indica A. Jussieu), pyrethrin formulated with piperonyl butoxide and certain synthetic organic pyrethroid, carbamate, ...
Piperonyl butoxide is a man-made pesticide used in ... "PBO is often combined with natural pyrethrins or man-made pyrethroids," NPIC says. "It has been used in pesticide products since the 1950s ...