Halocho #37 - Benefiting from idols

One may not benefit from anything related to idols, including its decorations, utensils and sacrifices. The building it's housed in, the pedestal it stands on and the musical instruments used in its service are all forbidden. Even the leftover candles stubs lit in its honor and the trees planted to enhance its scenery are forbidden to be used. Once a non-Jewish idol worshipper destroys his idol, all the above become permitted with the exception of the sacrifices which remain forbidden indefinitely. Source: Kitzur SA 167:1,2