The time interval for brushing your cat’s teeth needs to be determined based on the cat’s specific diet. If your cat usually eats little meat and its teeth are not dirty, you can choose to brush its teeth once a month. If your cat’s teeth are dirty, you can choose to brush them every two weeks. Generally speaking, cats’ teeth are not prone to dental calculus, so they don’t need to brush their teeth very frequently. You can usually give them mouthwash. Because cats are quite resistant to brushing their teeth, pet owners who are not careful when brushing their teeth can easily damage the cat's gums and cause inflammation.