I tried the AVC treatment the first time my female cat got a UTI. It worked for about a month then stopped working. After she had 2 more UTI's and 2 more useless, expensive shots of antibiotics, I tried something different.. Colloidal silver. I give her 1/4 teaspoon 3 times a day in canned food. It's going on 3 months now and she hasn't had another UTI. I also just started to give her 125 mgs of glucosamine twice a day. It acts like cranberry juice as it coats the urinary tract and prevents bacteria from sticking. Cats up to 10 lbs take 125 mgs a day. Cats over 10 lbs take 125 mg twice a day, preferably mixed in canned food. Some good vets are recommending this now.