This natural-based, EPA-Exempt formulation, treats the infection commonly known as Rain Rot (or Rain Scald). This infection is caused by anaerobic bacteria, and is associated with by wet conditions. This infection requires the absence of oxygen to live and spread. When a horse develops rain rot, it will develop a series of crusty scabs and/or matted or raised tufts of hair. If the tufts of hair are removed, usually pink skin laced with pus will be visible. This infection is contagious and generally transmitted by shared horse tack, such as blankets or mutual rubbing posts, etc. This formulation is designed to work continuously in wet conditions. It is unquestionably the strongest and safest product available.