Ear mites are definitely contagious, no matter what age they are. Therefore, after a cat is infected with ear mites, the owner should do a good job in isolation to prevent the ear mites from being transmitted to the kitten. It should also be isolated from other cats at home as much as possible, and the home should also be disinfected. Things that cats often come into contact with should be cleaned frequently, and it is best to expose them to the sun.