If you want to get control of the DW, you might try Clipper for spot treatment, or Sonar if you're willing to go all in. Be aware that Sonar will likely do a number on other, possibly more benign plants as well. And, something, most likely FA, will probably move in once the DW is gone.

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.