If you do a banishing spell, is it okay if you do it outside or somewhere away in the community as long as you visualize the energies , if the evil spirit is inside the house? I find it difficult to concentrate when near or around the spirit to cast a spell.
Picture a white aura around you when your in your house and meditate or such whatever relaxes you and view the white aura to block all negative energies and such and imagine pushing it through the house to cleanse it. I understand you said you wanted to do something outside but this helped me though since you have to go to bed no matter what and it might still be there. Picture yourself being in a bubble or such too if you think you can picture that better and feel safer.