Some of the places where I want to use the Sprayborg are: a retail shoe store in a mall, can't get to it with the truck mount and they only have a 5 gallon hot water tank, making portable work a real chore. Just over 4000 sqft for $1,000.00 I can't see it taking me more than 4 hours. I am also looking at some seniors residences. Less chance of a slip and fall. I used it on a 5 story condo building where I usually use the Truck mount. The truck takes me almost 3 hours because of the complicated and long set up. The Sprayborg took 1 1/2 hours and did an incredible job. There was serious soiling around the elevator and some suite entries. The Sprayborg scrubbed and evened everything out so that the entire area looked clean. I used just the synthetic pad with 50/50 mix of Vacaways's Shatter and Hotknife. If you want to be more serious about removing more soil, you can always go back over the area with the terry cloth pads.