My 12 year old male cat, Max, just recently had a really bad bladder infection -- he was peeing blood. I gave him 2tsp of Colloidal Silver 3-4 times a day for 3 days and by the 3rd day, he was voiding lovely yellow pee. I continued giving him 2tsp twice a day for 10 days. I got my CS from Utopia-Silver and had about 1oz left and used some of that to "seed" distilled water and made my own CS with silver wires, 9volt batteries, battery connectors and alligator clips. Utopia-Silver also sells a CS generator.