topical application of ionic silver is applicable only to diseases on the skin caused by bacteria, viruses, fungus and insects. in your case, you might as well take it orally so that your intestines and other internal organs where the ionic silver passes will be cleansed. killing the bacteria and parasites as it moves out of the body. UTI is an infection inside your urinary tract so have to cure it internally also. it's better also if you can make your own ionic silver at home so that you can take it every minute as you wish and you can save more of your money. i bought my own generator at health2us.com last year. it helped me a lot and my neighbors too.hope you can get one and be UTI free.