I tried apple cider vinegar on my 2 1/2 year old male cat, Benzi and it worked for a while but it was a strugle to get him to swallow it and, the moment I stopped giving it to him the infection would come back in a couple days. I found this cranberry capsules that treat UTI's in humans and have been diluting 2 capsules in 1 oz of distilled water and have been giving it to him twice a day for 2 weeks now and no sign of UTI's! Not to mention he doesn't mind the taste of it at all. I highly recommend them. I had taken him to the vet back in January and spent 700.00 dollars on a flush and antibiotics and diet food. A few days later he was sick again, so for those that say take him to the vet right away, unless you can afford 1000.00 dollars every vet visit, try alternative natural remedies, They Work!