Banishing and exorcism.
The Lesser Banishing Ritual of the Pentagram.
With annointed oil or holy water, make an equal armed cross, speak Psalms 91 aloud at each (door. Window. Wall. Floor and ceiling.) and give license to dismiss after the psalms are spoken.
I never said that the LBRP does actually banish sacred space.
There is another ritual from the Golden Dawn that is used for that with the Adept lamen - The Ritual of the Rose Cross.
The Outer Order grades were not recommended to mingle with evil, or the world, to keep head down in the books doing your meditations and daily LBRP.
My banishing recommendation only makes sense if you are Judeo-Christian or by use of it makes a miracle.
It worked for me, but then again, Im non-denominational Christian. Iow, I believe in Christ, but am a bad servant.
That method is using anointed oil, place/draw with oil an equal armed cross on every wall, window, door, floor and ceiling. And I mean every. At each cross recite psalms 91; give license to depart in a commanding tone.
This only works if you cut all ties to the occult and burn everything and absolutely everything related to the occult.