If a cat has been exposed to dirty things and is infected with parasites, first buy internal and external deworming medicine to help the cat deworm immediately. If there are a lot of bugs in the cat's body, it is recommended that the owner buys deworming spray and spray it all over the cat's body. After that, you can kill the black bugs with the help of sun rays. The environment and supplies in which cats live must be cleaned regularly to prevent bacteria from causing parasites to breed in the cat's hair.