Prosoco Enviro Klean EIFS Clean ‘N Prep was developed to clean exterior insulated finish systems. It removes residues of mud, algae, grease, oil and food staining from exterior insulated finish systems and can also be used on substrates such as concrete, brick, natural stone, ceramic tile, most metal, wood, plastic and most painted surfaces. Used properly, Enviro Klean EIFS Clean ‘N Prep will clean and help restore the original appearance of your EIFS structure. Enviro Klean EIFS Clean ‘N Prep is a non-caustic, non-acidic phosphate and solvent-free cleaner for general maintenance and recoat-prep cleaning of EIFS and related substrates. Enviro Klean EIFS Clean ‘N Prep is compliant with all national, state and district VOC regulations.