Pro’s Choice OSR XG (Odor and Stain Remover) destroys offensive odors through the natural strength of oxygen and the biological power of odor modifiers. No strong or artificial fragrances are left behind – just clean, fresh-smelling carpet and hard surfaces. Pro’s Choice OSR XG permanently removes pet odor contamination from stain-resistant carpet. In fact, you get guaranteed results from a single treatment! This non-allergenic products works in just 30 minutes.