Hey Jeff my name is James and I'm from Minden. I do a lot of commercial fleets in the Shreveport-Bossier area. I can't really help you with the vent-hoods but I know that my supplier could. Just give him a call at 318-746-2090. His name is Tom Rider and he's located on Jeter street just off of highway 80 in Bossier. Every once in a while I get asked about vent-hood cleaning and if you get into it I'll be more than happy to refer you. Hope this helps you out...let me know if you need anything else.