PURGE WHIRLPOOL BATH SYSTEM CLEANER. Unlike "Home Remedies" such as household bleach, automatic dishwasher detergent, vinegar, and baking soda, PURGE is specifically formulated to help safely remove circulation system odors and unsanitary bath residue such as soap scum, bath and body oils, mold, mildew, and dirt that can harbor and nourish infectious bacteria. Shipped with USPS Parcel Select Ground.