 And it works on aphids. It works on spruce gall. It works on leaf miners. It works on boar. It works on bark beetles. Bark beetles are tough to control, but this is about the only way to do it once they get into the trees and do some damage. But I would definitely do the fertilizer micronutrient combinations for them. Is the drench the same one that I use on my box elder tree? Yep.