According to NFPA Code 12.7.2, cooking equipment that collects grease below the surface, behind the equipment or in cooking equipment flue gas exhaust, shall be inspected and, if found with grease accumulation, cleaned by a properly trained, qualified and certified person acceptable to the authority having jurisdiction (AHJ). With this code now in effect, you have the opportunity to be the first to offer this service to restaurants before the market gets saturated and build a great add on business for your company!!!