£180 for up to one hour on suitable small holes. Whether you need it, when to book it, and the honest limits of what proofing can do to a building.
Pest proofing costs £180 and covers up to one hour of work on suitable small holes. It is a separate service from treatment and is not included in the £190 or £240 price.
If you have an active rat problem right now, proofing is not what to book first — and the reason is the most important thing on this page.
| Your situation | What you need | Price |
|---|---|---|
| Droppings, noises or a sighting now | Treatment first | £190 / £240 |
| Problem dealt with, want to prevent a repeat | Proofing | £180 |
| Active problem and obvious gaps | Both — treatment first | £370 / £420 |
| Never had rats, want prevention | Proofing | £180 |
| Rats in the garden only | Possibly neither yet | — |
The single most important thing on this page, and the mistake people make most often.
A rat sealed inside a building will gnaw at whatever stands between it and the outside. That means cabling, pipework, plasterwork and door frames — and a dead rat inside a wall cavity that nobody can reach for weeks.
Treatment first, proofing second. It costs slightly more in the short term and saves a great deal in the long term.
One hour of work on suitable small holes — the openings that are accessible and appropriate to close with pest-proofing materials:
See our complete service, published prices and treatment information.
View Rat Control Harrow →Worth its own section, because it is the reason some rat problems keep coming back regardless of what is sealed above ground.
Rats use drainage systems and are strong swimmers. A cracked, collapsed or disused drain run — or a missing rodent barrier at a redundant connection — gives direct access into a building's underfloor void. Proofing materials do nothing about that.
Signs worth noting: recurring problems with no visible surface entry, activity concentrated around a ground-floor toilet or soil stack, or a property with known drainage history. Where we suspect it, we will say so, and the fix is a drainage contractor with a camera survey.
Some of it, genuinely. Wire wool packed into a gap and sealed over is within most people's reach, and a threshold strip on a garage door is a straightforward job.
Two things make it harder than it looks. Identifying which openings matter is most of the skill — properties have dozens of small gaps and only a few are in use. And expanding foam alone is not proofing: rodents chew through it, so it needs a chew-resistant material behind it.
For a rental property the arithmetic usually favours it: £180 once against a second treatment plus another round of tenant disruption. Combined figures are £370 for a flat and £420 for a house, published so it can be authorised without a quotation stage.
The same £180 throughout Harrow and every surrounding area:
No. Treatment is £190 flat or £240 house; proofing is a separate £180.
You are told before the work, not afterwards on an invoice.
Not necessarily. Mice pass through smaller gaps than rats, so proofing done to a rat standard may leave mouse-sized openings. Say if mice are also a concern — it changes what needs sealing.
Sealed openings stay sealed. Buildings move, weather and get altered, so no proofing is permanent — which is why we will not claim it is.
One more published price while you are here — wasp nest treatment across Harrow is £90 fixed cost, guaranteed.
£180 for up to one hour on suitable small holes.
No. It is a separate service, because not every property needs it.
After. Sealing rats inside a building makes the problem considerably worse.
£370 for a flat and £420 for a house.
No. Defective drains are a common rat route and need a drainage contractor with a camera survey.
No. Rodents chew through foam — it needs a chew-resistant material behind it.
Not necessarily. Mice get through smaller gaps, so mention them if they are also a concern.
No, and nobody honestly can about a building. Proofing reduces the likely routes in; it does not seal a house.
Tell us what is happening now and we will tell you which you actually need — including if the answer is neither yet.
Prefer to talk? Call 0203 151 6640 or WhatsApp us.
