The stain that I seem to have to make the most return visits on is a water stain on commercial carpet that is glued to the cement. They normally come from a splilled mop bucket or clear water from various sources. The last one was from a bottled water cooler/dispenser that leaked out, leaving a stain the size of a large dinning table. I added orange deodorizer to my normal 101, buffed, toweled and set up a fan to dry quickly. I always spray lightly to avoid wicking but always have to return at least one or two times before I get rid of the stain. Does anyone have a better trick to reduce this to a single attempt?