Bile aids in the excretion of toxins through a process called biliary excretion. Xenobiotics and their metabolites can be secreted into bile via active transport mechanisms in the liver. Once in the bile, these compounds are transported to the intestine, where they can be further metabolized by intestinal flora or excreted in feces. This process is particularly important for the removal of compounds that are not easily excreted by the kidneys due to their size or lipophilicity.