Spectracide Triazicide is not going to control wood boring beetles. If the beetles are Ash Borers, then you will need a SYSTEMIC insecticide such Merit
or Dominion 2L
. These products will absorb through the root system and dispurse through the trunk and into the limbs. Spectracide won't do this. It is for topical control only. It kills on contact, but has no systemic activity.