A sure sign that your cat has a urinary tract infection is seeing him straining to urinate when in his litter box. This is often accompanied by vocalizing and eventually abandoning the litter box altogether. What can you do to prevent urinary tract infections in cats? The most important thing you need to do is take your feline friend in to see a veterinarian immediately. This situation can be life threatening if not caught in time and treated effectively. What are some things you can do at home to try to prevent urinary tract infections from happening with your cat? Herbal remedies. Try herbs such as hydrangea, gravel root and corn silk. These are all effective at acidifying the urine and possibly dissolving any existing bladder stones. Ample water supply . Make sure you cat has lots of opportunity to drink water throughout the day. Just like with humans, drinking enough water is critical to flushing the system out and preventing any crystal buildup in the urethra and bladder. Diet. ...