D-Mannose and Cranberry powder can be beneficial for cats and dogs as they help prevent and support UTIs. D-Mannose is a natural sugar that can help get rid of free radicals from attaching to the walls of the urinary tract, while Cranberry powder contains proanthocyanidins which can also help stop the sticking to the bladder walls. Both supplements can be added to a pet's diet to help maintain a healthy urinary tract and support UTIs. Additionally, D-Mannose and Cranberry powder are safe and natural alternatives. However, it's important to consult with a veterinarian before giving any supplements to your pet. • D-Mannose is a natural sugar that can support the body to stop harmful free radicals from sticking to the walls of the urinary tract in cats and dogs.