FOAM PLUSTM is highly concentrated to remove carbon grease from ovens, grills and rotisseries.To be used on warm surfaces—180°F to 200°F. FOAM PLUSTM will cling to vertical surfaces. For use on: range tops, pizza ovens, steam jacket kettles and conveyor ovens. FOAM PLUSTM is safe for use on: stainless steel, porcelain, mild steel, ceramic, glass and brick. FOAM PLUSTM does not generate the airborne caustics found in ordinary aerosol oven cleaners.