Karcher Puzzi 1.006-673.0, Kurve 2-Jet Wand 110-01. Step 1 - pre-vacuum with the Karcher CV Upright Vacuum Cleaner 4 passes at 1.8 ft/sec. Step 2 - Pre-spray with Prochem Ultrapac Trafficlean Pre-spray (6oz/1gl at 1.0 gl/200ft2) followed by agitation using a Gandigroom carpet rake. Allow to dwell for 10 minutes prior to cleaning. Step 3 - Hot water extract with water only using 2 wet extraction passes 2 dry pass at a rate of 1.0ft/sec on each pass.