Join Date: Jun 2008
Location: northern Minnesota
The easiest and most reliable way to manage a male cat who develops urinary crystals would be to bring him inside permanently and take care of him there, separated from the other ferals. How have this cat's UTI's been diagnosed? The ONLY way to definitively diagnose UTI in cats is by testing sterile urine acquired through cystocentesis. If this cat has been diagnosed based solely on bloody urine, or if testing has been performed on free-catch urine, then your friend really doesn't know whether or not this cat actually has a UTI. And if he doesn't have a UTI, antibiotics will be useless.
Has the cat been diagnosed with urinary crystals, as well as UTI? If so, what type of crystals (struvite or oxalate - they require different medical management).
This cat needs no kibble and more water. Cosequin may be helpful, regardless of his specific diagnosis. But if he is developing crystals, and if he blocks completely, he could die an excrutiatingly painful death in a matter of hours if your friend doesn't find and get him to the vet in time. There is no home remedy that can guarantee to eliminate crystal formation. The safest management of a cat with a history of crystal development is close monitoring in a readily accessible environment (like inside a house).