Where I live is the Hometown of Whataburger, they started here in 1950 I think.
I am not sure about the other cities or states but here they want one company to do the vent cleaning and concrete cleaning. The company that they are using now.......I have heard numerous complaints from the staff and patrons when they are working. I will not post what was said about them, how rude they are to customers and staff, the quality of their work, etc....I am not going to bad-talk them so I will not say anything about what was said.
Anyway, I was wanting to get the concrete but it is a package deal unfortunately so you might want to check into that. I heard that they don't want to have any company sub out any work so you would have to do the vents and concrete. Like I said, that is how it is here but not sure if it is that way in other places.