Are Granddaddy Long Legs Venomous?

"Daddy-Longlegs are one of the most poisonous spiders, but their fangs are too short to bite humans"

Can a daddy long legs kill you?

Daddy longlegs being venomous enough to kill six people is a myth, they have no venom and no teeth so cannot hurt you. Although slightly annoying, this type of crane fly is completely harmless and doesn't bite like some spiders.

What happens if a granddaddy long leg bites you?

Yes and no. As noted, harvestmen are omnivores and are classified as both predators and scavengers. They use fang-like mouthparts known as “chelicerae” to grasp and chew their food. However, harvestmen aren't known to bite humans and are not considered a danger to households.