Urinary tract problems are fairly common. A major cause of these urinary tract problems is the formation of bladder stones. The formation of bladder stones starts with the formation of crystals in your dog's urine. Both the acidity of the urine and the composition of the minerals affect the formation of crystals. Special diet food from the vetUrinary S/O Diet from ROYAL CANIN® is specially developed to dissolve urinary crystals. It helps to reduce the formation of bladder stones such as struvite. Increased fluid intake increases the volume of urine. This reduces the concentration of crystallising substances in your dog's urine. This helps keep the urinary tract healthy. In any case, always provide plenty of fresh drinking water. Then your dog will excrete any crystals.