So I am having problems with Dusty-in the last 3-4 months now he has reuccurung blockages. The last one being tonight, I have run U/A and had never found anything before tonight. We found a very high specific gravity, some white bloods cells and TONS!!! of triple phosphate crystals, that were no there a month ago. I know I should really switch his food, but all the urinary foods contain chicken and little Uno is sevely allergic. Any suggestions from anyone as to what to do or feed. I give him Cosequin for cats at night and Buprenex for pain-I NEED HELP!!!!