Hey
So i like to use a combination treatment. First if the plant is able to be outside where you can wash and wipe some off with hands towel and water that helps. Then i use dr Bonner's castile soap, it's the best method, as a spray..it breaks down their outter body but wears off quickly, so do a few treatments 3-4. Then ill come in with neem last because it has an unpleasant taste and smell, so that i use to help keep them away(the trunk, the soil, the underleaves and branches.)