T&G on CC jobs. A little over spray at the doorways with some PowerMax sucked up with my glided Bentley is a good demo of how it will clean with the spinner. After pointing it out to the custy I shoot them a flat rate price and they usually bite. If they don't, they look at the clean grout at the door way and call later for a complete cleaning. Go ahead and call me a hack for the over spray. It sells itself. Then there's always the 3MSG, Teflon or other protector for, mostly, higher end custys. I'd rather sell protector as it's less labor intensive.