Will the Fleas in My House Go Away on Their Own?

It is a fair question. Fleas are small, you may only have seen a few, and nobody wants to pay for a treatment that was not needed. The honest answer is that a flea problem in a lived-in home almost never fades by itself, and the reasons are worth understanding before you decide to wait.

Why Fleas Do Not Simply Die Out

A single female flea on a cat or dog lays eggs every day. Those eggs roll off into the carpet and bedding, hatch into larvae that feed on debris and flea dirt, and then spin cocoons. Each generation is larger than the one before, and the whole cycle happens in your floor coverings rather than on the animal.

For the problem to go away on its own, every stage would have to fail at once. In a warm home with a pet, that does not happen. Central heating keeps them developing through the winter, so a quiet spell in the colder months is not the end of it.

Does Treating the Pet Make Them Go Away?

Treating the pet with a product your vet recommends is essential, and in a very light, early problem it can be enough over time, because the animal stops carrying and feeding new fleas. It does nothing about the eggs, larvae and pupae already in the house.

That is why so many people treat the cat, see an improvement for a week or two, and then find fleas again. New adults are still emerging from the carpet and jumping on. Our guide to fleas on dogs covers what else needs doing around a pet.

The One Case Where They Might

If there is no pet in the house and the fleas came in briefly, for example on a visiting dog, a small number of adults may die off without breeding much. People are a poor host for the cat flea, so without an animal to feed on for long periods, a small introduction can fizzle out.

Even then, the eggs that dropped during the visit can hatch and develop over the following weeks. If you are still being bitten around the ankles a couple of weeks after the visiting animal has gone, the fleas have established themselves and are not going to leave.

Why Going Away Can Make It Worse

Some people hope a holiday will starve the fleas out. It tends to do the opposite. With nobody walking about, the fleas stay in their cocoons and keep accumulating, and when you come home they emerge together. The flea treatment cost guide explains this in more detail.

An empty house does not starve fleas. It stores them.

What to Do Instead of Waiting

• Confirm it is fleas. Our flea identification guide covers the quick checks, including the damp paper test for flea dirt.
• Treat every pet in the house, on your vet's advice, and keep it up to date.
• Wash bedding and vacuum the places the animal rests, and empty the vacuum outside.
• If it carries on for more than a couple of weeks, have the property treated rather than buying more sprays.

Our flea control service treats the rooms the fleas have reached. It is £220 for the first room, plus £60 for each additional room, with no call-out fee, and the total is confirmed before anything is booked. Every treatment is guaranteed: if the problem comes back within 14 days of treatment, we return and re-treat free of charge.

For what the treatment involves once it is booked, see how long professional flea treatment takes.