Cats should generally be dewormed internally every three months, and externally dewormed once a month.
Common internal deworming medications for cats include Drontal and Hydrance, which should be used at least every three months. Common external deworming medications for cats include Advantage, Advocate, and Frontline, which are generally used once a month. If the cat lives in an area with a high risk of parasite infection, such as when it frequently eats raw meat or during the summer when environmental parasites are more prevalent, internal deworming can also be done once a month. The specific deworming interval should be determined based on the cat's diet, environment, and the type of deworming medication.
