How long do fleas live without a host?

There’s the myth that makes us believe that parasites can’t live when they are left without a host. In some cases, this happens, but in many of them it doesn’t. Fleas are known to live by sucking all the blood they can from animals, but could they live without it?

Before they hatch, fleas are bound to live inside a cocoon. The time that they spend there is going to be 100% without a host, they are just waiting for one in order for them to get the food. In fact, they can stay up to 1 year in that environment. Once they have already gone out of it, it only takes one week for them to either live or die of starvation. Although having a cool and full of water environment can help them last a little bit longer, almost a month before they die.

If they lose their host they can go to dark places and go into a dormant state while waiting for their prey to come. Of course, in that time period they are not going to be able to breed, however they can sustain themselves if human blood is consumed, so it makes it dangerous having these pests at home without any pets.

When one of them has been feeding from a host, and then they are disconnected or taken away from it, they will die in a time period from 2 to 14 days, this happens because they have been feeding, blood creates a dependency and they are tied to it. On the other hand, when they are in a larvae state this doesn’t occur because blood isn’t need to survive.

Young fleas have it differently since they can live approximately 7 days without having a meal, while the ones that have been undisturbed can last as long as 100 days. This can be up to 155 days if the flea has gone back to a cocoon, where they are in an hibernation type of state.

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