How old can cats be when they start brushing their teeth?

Cats can be brushed after they have changed their teeth, which is around 5-6 months of age. It is generally recommended to brush your cat’s teeth 1-2 times a week. You should not use human toothpaste to brush your cat’s teeth, but use a special toothpaste for pets, and you can also use a special mouthwash for pets to clean their mouths.