I'm glad to hear that you were able to catch Percy's UTI while it was still a minor one. I don't have any answers about how to prevent UTI's except to make sure that they drink lots of water. I've been adding some water to my furkids food and now they're used to it. I feed them a mixture of both wet and dry food. Some people also give their cats cranberry treats but some cats don't like them. I've never tried these before. Good luck and I'm glad to hear that Percy is feeling better.