His photographs are very distinctive, as he incorporates unusual objects, including diamonds, sand, chocolate and rubbish into his photographic process. One of the most striking examples of this is his project "Pictures of Garbage", which are monumental photographic portraits, created from industrial rubbish. This series was created in collaboration with the rubbish pickers of Jardim Gramacho, an enormous dump just outside Rio that is one of the largest landfills in Latin America. Muniz donated all the money he recieved through the sales of the artworks to the workers, which is just one example of the charitable work that he considers a vital part of his life and art.