But there is a larger picture to this, demons are also battling for possession our souls. The Devil isnt going to jeopardize this unholy agenda by making guest appearances at a skeptic's home.
Take smudging for instance, that is never mentioned in the Bible as a means to drive negative energies away. Never.
Smudging is a pagan practice that was adopted by modern neo-paganists and amateur ghost hunters.
How can burning sage drive a spirit away? Is this a form of superstitious witchcraft? IMO, this just serves as a placebo, a false assurance, a witch doctor's list of home remedies.
What is needed is alot of prayer and being ministered to by a trained minister. Only Jesus can drive negative spirits away, not burning herbs.
What does an evil spirit got to fear from sage anyways? Its just a herb? Its smoke does not hold any mystical power over the spirit world.