Cats’ external deworming needs to be done once every three months, and internal deworming can be done once every 1-2 months. Please note that when purchasing anthelmintics, you must go to a regular pharmacy to buy them, and you must accurately follow the instructions in the instructions to control the dosage before use, because anthelmintics are very strong and excessive amounts will cause physical discomfort in cats. Do not bathe the cat for a few days before and after deworming to allow the drug to work better.