Whenever on a sidewalk, Frigo unconsciously scans the floor in search for discarded items. If he notices one he has never picked up before, he picks it up and puts it in a pouch he keeps around his torso. He later uses the discarded objects to make collages of 150 by 150 millimeters. He then scans them and solarizes them by inverting its colors. This digital collage is meant to be later printed on a decal for ceramic tiles. A month comprises 16 of these tiles placed in a four by four grid.

Full month number 65 of trash picked by Frigo while living in Sweden Frigo scanning trash setup in 2016 One year worth of trash shown at Fort Mason, San Francisco in 2015 Religious and commercial trash picked by Frigo in southern India in 2017 13 years of trash picking (low resolution) 13 years of trash picking (low resolution) Picking trash in new york city in 2013 Burning of ceramic tiles as part of Harvard University research project in 2011 Location of the central side-walk covered with the tiles within the museum

At the end of Frigo's project, it is estimated that 6192 tiles of scanned trash will be installed in a corridor of 4.8 by 32.4 meters making up 15,552 square meters of picked trash over the course of 36 years. The installation then becomes a centralized sidewalk, a central-walk that has been purified by the dirt of its content. In addition, as in mosques, visitors to the walk will have to remove their shoes, to ensure that the fired layer on the ceramic will not be spoiled.

According to Frigo this work is highly representative of a society he explores. Not only does it show the different calligraphies of the world but also the way different societies of the world allow or censure certain persuasive content over time. While on the sidewalk of Tokyo and Prague he might find pornographic content, on the muddy sidewalks of Madurai it might be of a religious nature. Frigo has initially experimented with firing the decals of his trash collages under a research project at Harvard University.