CLR PRO® Commercial Probiotic Cleaner removes tough soils and provides three days of cleaning power. Probiotics remain on the surface for up to three days. Made of 86% USDA bio-based ingredients. Lemon-scented formula is bleach-free. Application: All-Purpose; Applicable Material: Aluminum; Chrome; Fiberglass; Grout; Stainless Steel; Chemical Compound: Propylene Glycol; Bacillus Bacterial Ferment: Probiotic Microbial Ferment; Caprylyl/Capryl Glucoside; Sodium Xylene Sulfonate; Dirt Types: Dirt; Grime; Soil.