G.T.C. General Tray Cleaner, 2 Lb. (908g) Powder. Special Oxygenating Formula designed to clean trays (including stainless steel trays), oral evacuators, and diamond instruments while removing alginate, zinc oxide eugenol paste, wax, and modeling compounds. G.T.C. contains a special flavoring agent and is effective as a deodorizer. G.T.C. is excellent for removing dried blood and for flushing and cleaning evacuators. 2 lb bottle