Kirk from Charlottesville, Va writes
There is not a knockdown insecticide by itself labeled for Carpenter Bees. There is Tempo Dust which is a fast killing dust that can be used to puff inside the boring holes made by Carpenter bees. You could also use a combination insectide that already has the knockdown power but also the residual that you need to treat Carpenter Bees. That product is Temprid FX. Please review our Carpenter Bee Treatment Page for recommendations.
Answer last updated on: 04/11/2018