Virbac HPM Dog Urology Dissolution & PreventionVirbac HPM Dog Urology Dissolution & Prevention This is a specialist clinical diet that encourages water intake and balances urinary pH to help dissolve and reduce struvite stones and reduce oxalate stones. Dogs can develop bladder stones for a variety of reasons such as a dietary imbalance, urinary tract or bladder infections or an underlying disorder such as Cushings disease. The most common types in dogs are struvite stones and calcium oxalate