Cleaned an Indian restaurant last week. All went well apart from the walk way out of the kitchen. It was about 1/4 inch thick with grease. Sprayed hot enzall and had to use a scrapper to cut it up and scrape it off. Also used powerburst but wasn`t as effective. Used an old rotary to break up the remains, as didn`t want to contaminate my good one. Is there anything else I could have done better.