“Can horsehair worms be killed or exterminated by spraying them with a vinegar mixture?” asks Tom in his submission. “Thank you.” Now, he does not send any photos of any worms, so we assume he is asking as he is generally curious. To answer his question, yes, it is possible to kill horsehair worm eggs with a vinegar mixture, though we do not know how effective it is against the adult worms. With that said, we do not recommend killing horsehair worms, as they are harmless to humans and pets.

Worm that infect sheep are usually bloodsuckers, while worms that infect horses usually feed off the contents of the animal’s intestines.