Hi, in January I took Jax for his 6 month checkup and the vet did a urine analysis and told me that he had found crystals in Jax's urine. He gave us antibiotics to clear it up. We went yesterday for his followup and did another test, it has cleared up but the vet kept insisting i change his food to hills to prevent another UTI. I told him No. The food that he is on is perfect. I am feeding him Fromm Beef Frittata. Jax used to have bad allergies and his whole life he had patches of missing hair on his back but since he switched to romm from Royal canine his patches are gone and he is in good health except for that uti thing. I keep reading about adding cranberry juice to his water about preventing UTI but I want to know how much. I went last night and I bought him some organic Cranberry juice and i gave him 1 teaspoon for 4 cups of water in his bowl. I dont want to over do it. Can someone tell me if that is the right amount and how often should i put it in his water bowl...every day or every few days?