WasherFresh™ combats odor causing residue in all brands of high-efficiency (HE) washing machines. WasherFresh™ is specifically formulated to help reduce and prevent mold and mildew build-up. Safe to touch, WasherFresh™ pouches are constructed of an outer envelope that is completely dissolvable. Each pouch contains an oxygenated bubbling action formula that penetrates and dissolves unseen odor-causing residue, providing a more effective cleaning option than other products. Each package contains 3 PowerPacs. Modern high-efficiency washers use less water and seal more tightly than older, less-efficient machines. This leaves newer machines more prone to residue, mold and mildew build-up. By using WasherFresh™ just once a month, you can be confident that your washer will be free of odor that may transfer to your laundry. The WasherFresh™ safe-to-the-touch PowerPacs are a simple, powerful and universal solution to a common problem with owners of high-efficiency washers. The PowerPacs dissolve completely and are septic tank safe!