Best cat food for my cat with a history of urinary tract infections....?

The first thing you should be feeding is canned food, not dry food. Cats that are prone to UTI's need as much extra water as possible to keep their bladder flushed out. I feed my cat who is prone to UTI's Wellness NO GRAIN canned cat food. You want to be sure it says No Grain on the front of the label. There are several flavors available. Wellness does have some canned cat food that contains grain so make sure you check the label. My vet recommended no grain canned food for my cat who is prone to UTIs & I chose Wellness because it's a better quality than grocery store brands, so I disagree with the woman at the pet specialty store. She may have been thinking of cats who are in kidney failure. Cats who have kidney disease or are in kidney failure should not have a lot of protein in their diets. I add extra water to the canned food as well & I also add about a 1/3 of a capsule of CranActin cranberry supplement. You can find this supplement also in health food stores or I'm sure you can order it online as well. It's a human supplement but it's basically just concentrated cranberry & it's safe for cats. Do you have well water? If so, please only give your cat bottled water. Hard water can cause bladder/kidney problems & lead to stones in pets as well as people. If you're interested in a more holistic approach to treating your cat, you may want to visit www.holisticcat.com and search their articles section.