Careful sometimes when digging into such things especially when concerning spirits. There are things that are beyond the veil that just love to play with curious minds.
Countess, I think it’s a great idea to do some research on your own if your boss won’t help. I find it curious that he, being a Christian, is not interested in a Christian based cleansing, though he is writing books about Hell and the Devil. Possibly the beings in your place of work are influencing him in some way? He seems to have some attraction to them if he doesn’t want them to leave…
Spiritual energy is blasting all over the place, and it could be a lead-up to Samhain - or something else entirely. That, if anything, is what we should be trying to figure out (and is the topic of this thread in question).
There are practices to envisioning your Aura as something... A Fire, a Wall... So, perhaps a Wall without Windows?
The thing about 'You can not see me' and 'You do not exist', is that there is still a 'You' in it. Meaning that, while you may be telling yourself this lie, you aren't truly believing it by still acknowledging 'You'. On the right track, but not quite there. And even then, this method wouldn't work in every situation. Not everything feeds solely on one believing it to exist. There are also leeches, that don't need acknowledgement, among other things that my mind sort of stopped thinking about. Weird. Still, since nothing of that sort seem to be the problem here, it doesn't really relate to this much. Just a warning of sorts I guess.Nina has a point on that. Instead of it no being there, sort of manifesting something between you and it. A protection of sorts.