S.R.B. is a powerful concentrated spot cleaner that dislodges and removes many common organic stains without damaging the surface when following dilution instructions. Its biodegradable, environmentally friendly formula works well on moss, mildew, leaf, rust, blood, beverage spills and non-greasy food stains. S.R.B. can be used outside, on old and new, horizontal or vertical surfaces to remove stains before cleaning the surface overall with Surebond’s SureClean or Efflo Off. S.R.B.’s Clean Rinse Technology allows dirt and cleaner residue to be quickly and easily rinsed away with a low or high pressure washer. S.R.B. is concentrated and requires dilution prior to use. With proper dilution, it is safe to use on surfaces sealed with Surebond sealers.