He explain how to carry on anti-bugs for Bonsai plants. First , he asks us to confirm you keep away people because of safety reason. Second, he mixes tick killer, bug killer and kind of adhesive to stay the medicine longer at the target plant. After around one month, he gives another tick killer, because some tick or bug has resistance for specific medicine.That is the reason he has many kinds of medicine. When you spray the medicine like the video, you do mainly on leaves, as ticks are on the leaves and not so much on brunch and stem. The bonsai with brown leaves gets damaged by "scale insects" which is active around in spring. You can find something like cotton balls at the bottom side of the brown leaves. You should add Isoxathion milk there to get rid of them, otherwise the bonsai will die.If you can do in winter to prevent them, it's good idea. The last part, he talks about anti- bacteria. It needs to spray brunches and stems like heavy rain, because they stay anywhere. All medicine has each dilution ratio.Please follow the instruction to keep your bonsai fine.