Banish S Probiotic BioSurfactant Organic Environmental Spray is a concentrated Ready-To-Use (RTU) misting product that addresses the presence of biological surface contaminants, and eliminates odours generated by mold, organics, smoke, flooding, and other causes. Best applied to surfaces after cleaning to remove heavy soils and organics. (recommended use of Banish M or Banish O for such surface cleaning.)