Here is a tip that was sent into Laidlaw by a customer on the East Coast. The water temperature is a little higher than IFI recommends but this cleaner swears by it and would not dream of doing his light washables without RSR.
"When wetcleaning light loads, which should be using water of about 100 to 110 degrees F, throw in 4 teaspoons of RSR in the last wash (which would actually be the last 20 minutes of the cycle). It works great on all the protein stains (bodily fluids, perspiration, etc.)".