A month ago I brought the baobab inside. A week later it was covered with little white bugs. I sprayed with Neem oil. A week later it was covered with little white bugs. I sprayed with Neem oil. A week later it was covered with little white bugs. I sprayed with Neem oil. Now, same thing. I haven't seen any ants, so I don't think they are aphids, but they certainly are harming the tree leaves. They are mostly on the bottoms of the leaves, but also some on the tops of them.
It was the same last year, except I sprayed with Safer Soap, and the year before alcohol.
What else is there to do?