See my response and rig on page 1. Yes they wash B+. They charge by the foot - usually a buck/foot for the straight wash. I often have them wash the attached toad as well as it can really get dirty behind the rig. Their price to wash the attached toad at the same time is nominal (ask)and those times I don't have the toad washed, they usually end up washing the front dirty half just by its proximity to the rear of the MH. Its a decent wash job and inexpensive but not necessarily fast. For each full length semi in line in front of you, figure a 25 minute wait added to whatever time is needed to finish the job already in the wash bay. If the truck also is looking for washout of trailer interior, it will add 5-10 minutes to your wait. I usually cruise the parking lot next to the facility so I can see what's in line. The facilities seem to always be set up with very long access drives and you can't see what's all in line and how mayt bays are open until you enter the drive. Once in the drive, there's no turnaround or bypass so you're stuck with your decision