Going to a physical place where evil occurred and holding an “exorcism” is probably not going to do much.
Exorcisms are serious business and are conducted by trained priests on people possessed by demon(s).
the Archbishop has no doubt attended many exorcisms at the Chancellory
There are several kinds of exorcism.
One of them is the driving out of demons from a possessed person. This one was a “simple exorcism”, which can be applied to objects and places. We have several times organized such an exorcism on business premises and homes, after a disaster, a rebuilding, new construction, a death, etc.