The Sriwedari Wayang Orang (GWO) Building holds security for the properties inside. This Jamasan is held regularly every year in the month of Suro. There are several properties in the Wayang Orang Sriwedari building that are shampooed (washed) with special rituals such as the Denok statue, gamelan, wayang costume, tropong (crown) as well as the Gatotkaca statue which is in front of the entrance to the Sriwedari Puppet Building. It begins with bathing the statue of Nyai Denok (the symbol of seniors) with water of jasmine flowers. This statue with the figure of a beautiful woman wearing a Javanese kemben and a bun is doused with water. What is unique is not just any water, but it is taken from several springs. Both springs from inside the Kraton, as well as water sources from Langenharjo. After that, a set of gamelan is sprinkled with jamasan water as a condition, including a crown and clothes that are usually used for performances. And finally, washing the Gatotkaca statue in front of the building’s entrance. Every time entering the month of Sura on Friday Kliwon, the jamasan tradition is carried out as a form of gratitude for the preservation of Wayang Orang Sriwedari, as well as a prayer for the Sriwedari Puppet artists so that they can maintain cultural preservation.