Ammonia oxidizing microorganism preparations for delivery to the urogenital system, kits including ammonia oxidizing preparations for delivery to the urogenital system, and devices for administering ammonia oxidizing preparations to the urogenital system are provided. Methods of introducing ammonia oxidizing microorganisms to the urogenital system are provided. Methods of treating disorders, including urogenital disorders and inflammatory disorders, with ammonia oxidizing microorganism preparations are provided.