Deworming is typically done when kittens are 2 months old, and generally includes external and internal deworming. External deworming is done every 3 to 6 months, depending on the kitten's living environment, and mainly targets fleas, lice, mites, and other external parasites. Internal deworming is divided into two phases: once every 3 months for kittens under 1 year old, and once every 6 months for kittens over 1 year old, mainly targeting tapeworms, roundworms, and other parasites in the digestive system. 
What to pay attention to when deworming cats:
1. Deworming your cat should be done regularly, about once a month. Cats are the definitive host for many parasites. Depending on the type of parasite, some have a life cycle of half a month, while others only take a week. Therefore, deworming once a month is absolutely necessary.
2. Observe your cat's mental state after deworming. After deworming, some cats with weak digestive systems or poor health may experience symptoms such as vomiting, lethargy, or even fever. These symptoms usually improve within 1-2 days. If these symptoms persist for several days, it is best to consult a veterinarian.
3. Do not use flea collars for external parasite control. Most flea collars are made with dichlorvos, which is highly toxic and very harmful to cats.
