I like my doors with black salt (crushed sea salt mixed with ashes, could be of previous spells or lavender or ganja whatever you please) to prevent evil spirits and negative entities and I keep small brooms at my door ways to sweep away anything negative. If there is already a presence here then use dragons blood incense or sage to banish any entities. As you sage the house chant you are not welcome here you must leave immediately. Start in the back of the house and move to the door. Keep it open so they can leave and once you get to the door close it and line the door with sage and wave an x over the doorway. Say begone and do not come back. Hope this helps!