Foxes use the Dollis Valley Greenwalk and the gardens beside it as a route and a place to rest. Where one lies up under a shed or decking, flea eggs drop into the ground beneath it, and a household with no pets can find itself being bitten.
Treating the rooms costs £180 for the first and £60 for each one after it, with the hall and landing not counted. Book a flea treatment or call 0800 955 2347.
The strip of green along Dollis Brook gives foxes cover to travel and to rest by day, and the gardens that back onto it are part of their range. A fox likes a dry, hidden spot: under a raised shed, beneath decking, behind a compost bin or in the gap under a summerhouse. The corridor itself is the subject of Pest Control Whetstone; this page is about the fleas that come with it.

Adult fleas live on the animal, but their eggs fall off wherever it rests. Larvae develop in the soil and debris under the shed or decking, and newly hatched fleas jump onto whatever passes: a cat, a dog, or the ankles of someone fetching the mower. The fleas found on foxes will readily bite pets and people, and from there they come indoors. Having fleas without pets explains how that happens.
Cats from several houses often work the same gardens and the bank behind them, crossing ground that foxes and hedgehogs use too. A cat that comes in through a cat flap and sleeps on a bed can bring fleas inside without anyone ever seeing a fox in the garden.

How to know you have fleas helps confirm it. Bites in lines on the upper body after a night in bed are more like bed bugs.

Flea treatment is priced by room, and halls, landings and stairs are not counted. So a house where the living room, the kitchen-diner and one bedroom are affected comes to £300. When you book flea control, tell us which rooms the pets use, whether there is a pet in the house now, and whether you think the fleas came from the garden. Before the visit, vacuum thoroughly and clear the floor where you can; how to prepare for flea treatment has the full list. Some bites can carry on for a while as fleas already developing in the carpet hatch, and why fleas still bite after treatment explains why. Get back in touch if they do not tail off.
Keep pets' flea protection up to date through your vet, particularly in the warmer months. Close off the space under sheds, decking and summerhouses once nothing is using it, and keep the grass short near the house. The same dry hollows that suit a resting fox also suit rats coming off the bank, so if you find burrows there, rat control in Whetstone is the next step. The borough-wide page, Flea Control Barnet, covers end-of-tenancy fleas and other cases away from the brook.
Flea control in Whetstone is £180 for the first room and £60 for each additional room, and halls, landings and stairs are not counted. Two rooms come to £240 and three to £300. The price covers treating the rooms in your home; your pets need their own treatment, arranged through your vet.
| Treatment | Price |
|---|---|
| Fleas – First Room | £180 |
| Fleas – Additional Room | £60 |
It is possible if foxes have been resting in your garden, particularly under a shed or decking near the house. Fleas picked up outside will bite whoever they reach. Book a flea treatment and mention the garden.
The price is for rooms in your home. If the fleas seem to be coming from under a shed or decking, tell us when you book and we will explain what can be done about that part.
Usually the rooms where the bites happen and where pets sleep. Hallways and stairs are not charged. Describe the layout when you book and we will say which rooms make sense to include.
Speak to your vet, who can advise on the right product. Treating the animals and the rooms together gives the best chance of clearing the fleas, and whether pet treatments clear the house explains why one without the other rarely works.
A previous owner's pet, or animals using the garden, could explain it. Flea problems after moving in covers what to check.
They can end up in bedding, especially where a pet sleeps on the bed. Can fleas live in beds and sofas? has more.
Most bites cause itchy red spots. If bites become infected or you are concerned, speak to a pharmacist or GP, and call 999 for signs of a severe allergic reaction.











Tell us which rooms are affected, whether you have pets, whether foxes use the garden, and your N20 postcode.
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