G.T.C. - General Tray Cleaner by Bosworth SKU 991-2124AA 123 $36.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Payment methods: We accept all major credit cards American Express Mastercard Visa 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.