I live in a mild climate area and occasionally move indoor plants outside or vice versa.
One succulent I brought into my office seems to have a colony of some kind of tiny flies in it. I've been waiting a few weeks hoping they will die out, but they're still climbing all over it. Oh well.
Another potted plant I intend to bring inside has numerous spiders living and hunting in it. In the garden this is fine but I don't want them in the office.
What steps can I take to get harmless but bothersome insects and spiders off a plant before it comes indoors? Will an application of neem oil work?