Foamy MAC is an advanced foaming cleaner formulated to cling to surfaces when sprayed with a foaming trigger sprayer or a foam gun. It 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. Safe for use on chrome fixtures. Green Seal™ Certified. Green liquid with a fresh scent. Excellent rinseability. Biodegradable. Phosphate-free. pH: <1.0.