Abstract: An extraction cleaner may include an upright body, a cleaning head pivotally coupled to the upright body, a supply tank coupled to the upright body and fluidly coupled to the cleaning head, a recovery tank coupled to the upright body and fluidly coupled to the cleaning head, and an agitator rotatably coupled to the cleaning head. The agitator may include a main body and a bristle strip extending helically around the main body and forming an acute attack angle with the main body that opens in a direction of rotation of the agitator during a cleaning operation of the extraction cleaner.