Well I have been cleaning exhaust systems for a few months now and have been learning new things everytime I go out. But I had to write about the one I cleaned yesterday. It is a little steak house that had not been cleaned in; well they wold me two years. Well We pulled in yesterday to start I knew there would be some scraping to do, so we got started at 8. We scraped the hood for over 3 hours and the fan for 2 hours we removed around 60 pounds of grease. I figure that that place had not been cleaned in 20 years not 2. Finally after all that scraping we applied the chemical and let it dwell for 30-45 min. We used the chemical full stregth. We ended up appling and reappling the chemcal 3 times be for it would be completely clean(bare metal clean). We ended up being there for 8 hours it was the thoughest job to date. But a least they are now on a every 3 month schedual. Thank Goodness for that. There are no questions here. I just wanted to sare that story with all of you.[rwb]