Why an Empty House Comes Alive
Before you left, the pet was shedding flea eggs round the house without anybody noticing. Those eggs hatched into larvae, the larvae fed in the carpet, and by the time you were away most had spun cocoons and turned into pupae.
Inside the cocoon, a fully formed adult flea can wait for weeks or months. It hatches when it senses a host: vibration, warmth and movement. A quiet house gives it nothing, so a whole batch sits ready. Then the front door opens, feet cross the carpet, and they emerge together looking for the first meal available — which, with the dog still at the kennels, is you.
This is not a new infestation. The fleas were already in the house before you went away. The holiday simply let a crowd of them hatch at the same moment.
The First Day Home
- Vacuum every carpet, rug and sofa thoroughly, and empty the vacuum outside. It brings more pupae out now, while you can deal with them.
- Wash any pet bedding, throws and cushion covers the animal uses on a hot wash.
- Walk the main rooms in long white socks to see where fleas are jumping.
- Wear long trousers and socks round the house for a few days.
If you can, speak to your vet before the pet comes home, so the animal is treated before it walks back into the rooms. A pet returning untreated gives the new adults a host to breed on and starts the cycle again.
Why It Will Not Just Stop on Its Own
The emergence does ease after a few days, and it is tempting to think it has passed. It has not. Only the cocoons nearest the footfall were triggered; others deeper in the carpet or under furniture are still waiting, and the adults that fed are already laying eggs.
The home needs a residual treatment on the carpets, floors, soft furnishings and pet areas that stays active while the rest of the cocoons hatch. Treatment is a fixed £220 that is confirmed with you before anything is booked. Afterwards, fleas will keep appearing for a few weeks as the last pupae emerge and meet the treated surfaces; how long treatment takes to work covers that period.
Before the Next Time You Go Away
The holiday is not the cause, so avoiding one is not the answer. What helps is going away with the house clean of fleas: the animal's vet treatment up to date for the weeks before you leave, and a thorough vacuum of the whole house the day you go. If you already suspect fleas, treat before the trip rather than after.
The same thing happens when people move into a house that has stood empty for a while; that situation is covered on our empty house page. Henley-on-Thames is on the Oxfordshire side of the river, and we cover it along with the Berkshire towns nearby.