My cat never goes outside, is it okay if I don't deworm him?
1. Cats must be dewormed even if they stay indoors.
2. Cats can get parasites even if they stay indoors.
(1) Most parasites are transmitted through the mouth. Cats can become infected with parasites by eating unclean food, such as raw meat, rats, insects, and birds. Among these, raw freshwater fish, shrimp, and crabs can easily cause cats to become infected with liver flukes and lung flukes. Therefore, it is important to ensure that cats have a healthy daily diet, not to feed them raw meat, not to let them go outside, to keep the house clean, and to prevent cats from catching insects.
(2) The owner's shoes can bring in dust and parasites from outside. The cat may be infected.
(3) There may be mosquitoes in the home during the summer, and mosquito bites can also transmit parasites. 
3. Deworming medication must be used to treat cats.
Generally, deworming medications for cats are divided into internal and external medications. Commonly used internal deworming medications for cats include broad-spectrum dewormers such as Milbemax, Bayer, and Advantage, as well as Happy Sugar dewormer specifically for treating Toxoplasma gondii. A commonly used external dewormer for cats is Frontline. All of the above are imported deworming medications, but domestically produced broad-spectrum dewormers can also be used. It is generally believed that although imported deworming medications are more expensive, they are more reliable.
4. Deworming can begin when the kitten is one month old.
Kittens can begin internal and external deworming when they reach one month of age. Deworming is not recommended for kittens younger than this. If your kitten is very young, or its health condition is uncertain or unstable, it's best to postpone deworming. Kittens only one month old can be dewormed every two weeks. After weaning, the frequency can be gradually increased, as kittens are more susceptible to internal parasites while nursing. Once kittens are adults and their immunity has improved, routine deworming can be done every three months.
