Upon arrival to this location we inspected the hoods to verify that nothing had changed. We unloaded our plastic (insurance) and tape and got busy building our funnels to divert the water we were going to spray in the duct and on the fans. We steam cleaned the inside of the hood, the duct through the roof and the fan on the roof. We will also scrape if the build up is extreme. After we were done spraying we took the plastic down, wiped all the equipment and the outside of the hood. We added our sticker to the outside of the hoods letting the fire marshal know and anyone that looks that the duct system was cleaned and when it was cleaned. We also mop to remove dirt or grime that we may have left. We then filled out our report and left the site.