I have been dealing with the exact thing. I emailed a dog food nutritionist for the same question and she told me struvite crystals are very hard to disappear and they only get worse and develop into stone. My dog has to have surgery next week my question to her was what kind of dog food do I feed afterward and she told me dog food has nothing to do with UTI and once I get the surgery have the doctor examine the stone to see what it was caused by and then follow up with the antibiotic afterword. It made no sense to me because for hours I have researched what Hills is made of and why it’s prescribed and I read the same thing that Hills does absolutely nothing in some cases it makes it worse. The nutritionist confirmed for me. A UTI is a bacterial infection and has nothing to do with the kind of food they eat although reading so many different opinions still going to find a grain-free dog food at the pet store. Good luck!
