About a year and a half ago I brought my 5 year old male neutered cat into the vet with blood in his feces. At this time he was diagnosed with IBD. He was on the prescription IBD diet for about 3-4 months when he started to have trouble urinating. He had a partial blockage the first time and trouble urinating the 2nd and 3rd time. After this I decided to do some research of my own. I changed his food to Wellness wet and Innova dry. I add water to both and a cranberry supplement. After about a year I brought him in yesterday with total blockage. He will be there for a total of 4 days. The vet will be prescribing Royal Canine SO. I have a hard time going from a high quality pet food like wellness to something that is not so high quality. I am worried that any bi-products in the food may bring his IBD back. Any suggestions would be very helpful. I do not want to put him through this again.