The Bladder tract is important because it filters wastes and extra fluid from the bloodstream and removes them from the body. Normal, functioning kidneys prevent the buildup of wastes and extra fluid in the body keep levels of electrolytes. A urinary tract infection (UTI) is an infection involving the kidneys, ureters, bladder, or urethra. BTI is formulated with a natural broad-spectrum antiseptic that is used to fight infections, reduce inflammation, and discomfort with urination.