O2 Plus brightens fibers and breaks down odor causing organic matter. It also boosts the effectiveness of your extraction detergent.O2 Plus gives you the most concentrated form of water soluble oxygen. Plus pH buffering and performance builders for your carpet extraction solution.Usage:For portables add 2 ounce (1 scoop) of O2 Plus into each 5 gallons of ready to use extraction detergent. Dissolve completely before use.For Truck Mounts add 8 ounces (4 scoops) into the 5 gallon cleaning concentrate solution. Dissolve completely before use.Tips:O2 Plus dissolves best in hot water. O2 Plus is most powerful during the first 12 hours.