How I did it today. Using the Nacecare “Hydro Washer” made it easy. Hermann post mopped like a sunuvvagun and remarkably, his mop water did not darken very fast. Total water used on 2205 sq feet, about 4 gallons. By the time we were on the last section, the manager had already emailed his complete satisfaction to corporate.
So... I can’t seem to upload the video (some security issue) and the FB link is static on my phone, so screw it, just take my word that it worked.