How Long Do Fleas Last on Humans?

The life cycle of a flea is about 17 to 26 days, and it can be difficult to determine exactly how long fleas last on humans. Fleas only survive if they have a host and can live on humans for a year or longer. They hatch from eggs and feed on organic debris for a few weeks before they move on to the next stage of their life cycle, the pupae. The pupae can survive in a cocoon for a long time, which is why cleaning the bedding is a good way to get rid of them.

The eggs and larvae of fleas are deposited in the bedding of a host animal, but if you don’t own a pet, fleas will still find their way into your bed. If you’re worried about finding fleas in your bed, make sure you wash the sheets and blankets regularly. You should also wash your bedding, especially if it’s covered in carpeting.

Fleas are small, flat insects that measure about one eighth to one sixth inch. Their six legs allow them to easily burrow through the fur and skin of their host to feed. The adult fleas are dark reddish brown with bite-like mouthparts. They can jump about two feet off the ground, which is the equivalent of a half football field!