. FOAMY MAC WILL CLEAN SOAP SCUM, MINERAL DEPOSITS, LIME OR GREASE OFF OF ALL ACID RESISTANT SURFACES INCLUDING: CERAMIC TILES, GROUT, DRINKING FOUNTAINS, STEAM TABLES, WASH BASINS, SHOWER STALLS AND BATHTUBS.FOAMY MAC CONTAINS BIODEGRADABLE SURFACTANTS, ACID SAFE TECHNOLOGY, AND IS NOT FORMULATED WITH VOC'S, BUTYL, PETROLEUM DERIVED SOLVENTS, NPE'S OR PHOSPHATES.