Deal with plant lice

I still dealing with the plant lice.
Finally I decide to pull out all garland chrysanthemum. Actually, pulling is not the good way because the shock during pulling drops plant lice on the ground, so that as much as possible I saw them down and bring them out of the green house. It took about 3 hours to finish.
And I hung the plastic films which has sticky material and yellow color and shapes like rectangle. It catches the plant lice with wings before it laid the clones.
And I ordered a bottle of organic insecticide.