Cats can use iodine solution. Iodine solution is a common skin disinfectant and can be used to disinfect wounds on cats. The concentration of iodine solution is best controlled at 2%, as this concentration is most effective. If you have medical alcohol at home, you can apply it after the iodine solution to remove the iodine and prevent the cat's skin from turning yellow. It is especially important to prevent the cat from licking the skin and fur where iodine has been applied, as iodine can irritate a cat's gastrointestinal tract and cause burns. Therefore, carefully observe your cat after using iodine solution. 
What to do if your cat is injured:
1. First, clean the wound. If the cat is injured, trim the fur around the wound, wipe away any contaminants with clean water, and then use a cotton swab dipped in iodine solution to clean the wound. After treating the wound, you can spray on some pet-specific wound healer, bandage the wound with gauze, and put an Elizabethan collar on the cat to prevent it from licking the iodine solution.
2. Pay attention to the cleanliness of the surrounding environment. Regularly maintain cleanliness and hygiene around the cat, including cleaning the cat's bed, changing the litter box, and bathing the cat appropriately. You can also disinfect your home with disinfectant.
3. Provide adequate nutrition for your cat after it's injured. Injuries are not only harmful to a cat's health but also weaken its immune system. It's important to provide it with nutritious foods to help speed up wound healing. Foods like chicken breast, beef, and fish balls are very helpful for a cat's recovery.
