2013!!
As has been stated before. Powerburst is not really intended for cleaning 100% wool oriental rugs. The instructions do say if used for cleaning wool, rinse with fiber and fabric rinse. Many people have, including myself, cleaned wool carpets with powerburst with no problems. Because of its alkalinity ph11 it runs the risk of causing color bleed and cellulose browning. Dwell time will improve cleaning performance, but will also increase the risk of color bleed and cellulose browning.
There is no set way of using a product for a use it was not intended.