"When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and findeth none.Then he saith, I will return into my house from whence I came out; and when he is come, he findeth it empty, swept, and garnished. Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation." Matt 12 43-45
"Seven times more wicked" indicates a range, a difference in categories. But think Eph 6 is about territories. Dont recommend engaging in territorial spiritual warfare with the exception - 'If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land." II Cor 7:14 As already posted, land meaning states, cities, neighborhoods. But it can be changed "Blessed is the nation whose God is the Lord..." PSA 33:15
Considering the outcome of Matt 12:43-45: because their hearts and minds are empty, swept, and garnished (set in order), don't see these Scriptures applying to unbelievers unless the Holy Spirit has directed.