Drugs containing fipreronil or abamectin can be used for external anthelmintic treatment. When using external anthelmintic drugs, you need to pay attention to dropping the anthelmintic drug in a place where the dog cannot lick it, otherwise the dog will be poisoned after licking it. Medications containing avermectin cannot be used on Collies such as Scottish shepherds and border collies, otherwise poisoning may occur.

If you find fleas on your dog, there may also be flea eggs in the environment. Therefore, in addition to deworming the dog, the fleas in the home must also be removed. Under normal circumstances, adult dogs can have an internal treatment every two to three months, and it is recommended to have an external treatment once every month, so as to effectively prevent and control parasites.