Matt Murdock said:
rake it in and dwell time is your friend. You don't need much more than that.
When I use the Rotovac I clean with the rotovac then rinse again with my glided wand
Way too much work right there....
I mix up about 5 gallons of prespray, after I vacuum of course. Start at the furthest point and spray my way out of the house (heavily) as far as I can go with the 5 gallons up to 1000 sq ft. Then I start pulling hoses, by the time I pull the hoses the first bit of prespray has dwelled and saturated the carpet plenty no groomer required unless it's really bad, I may shoe scrub some spots. Then I rinse with an emulsifier through my greenhorn.....the emulsifier gets the tough spots the ps couldn't get all of. If that don't get it then it's time for the 175 or in my case a pad on my rx-20. I've been saving tons of time with this method. The prespray wont dry for sure since it's way wetter than when I leave after extraction and it takes at least 2 hours to dry after I leave.