Exorcism
In Catholic practice the person performing the exorcism, known as an exorcist, is an ordained priest. The exorcist recites prayers according to the rubrics of the rite, and may make use of religious materials such as icons and sacramentals. The exorcist invokes God—specifically the Name of Jesus—as well as members of the Church Triumphant and the Archangel Michael to intervene with the exorcism. According to Catholic understanding, several weekly exorcisms over many years are sometimes required to expel a deeply entrenched demon.
Gabriele Amorth
He said that the new rite of Exorcism is "a farce. An incredible obstacle that is likely to prevent us from acting against the demon." He observes that the new exorcism rite forbids exorcisms on people who have been reportedly subjected to evil spells. Father Amorth exclaimed, "Absurd! Evil spells are by far the most frequent causes of possessions and evil procured through the demon: at least 90% of cases. It is as good as telling exorcists they can no longer perform exorcisms." He also noted that it also "Solemnly declares that one should not carry out exorcisms if one is not certain of the presence of the devil", while "it is only through exorcism that the demons reveal themselves". He considers the new rite, "A blunt weapon ... Efficacious prayers, prayers that had been in existence for twelve centuries, were suppressed and replaced by new ineffective prayers."