Oh! I thought that was a typo. 
My bad.
But banishing only clears the area at the time of banishing. They wander back in, new ones come, and some were just hiding. LBRP is supposed to be a “keep out” as well, but seems not to work that way for everyone.
This is why I recommend wards. A ward is a shield around your house, bed or apartment. It’s like an electric fence with “keep out” written on it. Then you do not have to banish all the time.
No. Only parasites or lesser entities - Earthbound things like ghosts or fae/djinn do that in my experience.
Another user here just posted a succubus experience with something identified as a djinn. I personally do not consider fae/djinn on as the same kind of entity as the non-Earthly celestials aka angelics/higher beings/gods. you posted on that and it’s why this thread exists
Earth is the planet of free will, it’s like a golden rule here, so the off-Earth beings can’t mess with it, but everything Earthbound, like us, can. If you tell a thing to go and it refuses, it’s Earthbound and deserves what it gets after that.
I’m pretty much convinced at this point that succubi are a particular type of jinn/fae.