It`s Minging, Pt2 Removing Cooking Oil, Dirt & Grease. 

How to remove Stubborn Cooking Oil & ground in Grease. for best Results! We use two chemicals first put down neat TFR Film remover and leave down for 40 mins and scrub it in and keep it wet looking then remove with pressure washer and then spray on Sodium hypochlorite at around a 5% mix and leave for at least 30 mins and a light scrub and wash off to leave best results. TIP, let the chemicals do the work.