The best way to prevent your cat from getting ear infections is to check them regularly and clean them if you see a build-up of debris, wax, or dirt. Healthy ears should be a pale pink color and there should be no obvious smell coming from them. If you check your cat's ears and notice an infection it's always best to take them to the vet so that you can treat the infection before it gets worse. Remember that it is never a good idea to insert anything into their ear canal as this can cause permanent damage and pain.