Wednesday September 19, 2012
Is the "synergist" P.B.O. repellant? Would adding it to Termidor or Phantom applications provide any benefit? My hope is that it is not repellant and I could use less Termidor or Phantom to obtain similar results.
PBO is piperonyl butoxide, and it is the more common of two synergists frequently added to pyrethrum to enhance the killing ability of the pyrethrum, which by itself can "knock down" an insect rapidly but which may not completely kill it. Insects such as roaches may be stunned, but can metabolize the pyrethrum molecule and survive. In the olden days a product called Ficam was found to be somewhat ineffective on German roaches because of this - the roaches metabolized the active ingredient. So, the manufacturer came out with Ficam Plus, combining the a.i. with PBO to help overcome that difficulty. Another formulation was a Baygon aerosol that also added PBO, and it was found that this offered an enhanced effect on many pests.
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