Pavamanasuktam is a very famous chant from the Vedic tradition. It is often chanted to help clean/refine energy be it in a place or a person. Many times when entering a new house or space of work, this chant was recited to purify the space of its past energy so that a new positive beginning could be commenced.
It is also used in healing, when dark energy such as past traumas, abuses or impressions from abuse/violence needs to be transformed.
Both Listening and learning to chant this chant can be very helpful in a number of circumstances.