Unless this guy is on an exorcism team, he has no power over demons, in my opinion. It has to be done by a trained exorcist.
A simple blessing of a house is a form of exorcism. I moved into a building and Father blessed it Holy Water,lay people came and blessed it with Holy Oil and then they did a St Michael thing and walked the grounds and said prayers.I asked Father and he said yes.That was for ministry.
So how does that work?