£360. Before you spend it, there is an afternoon's work that resolves a surprising share of these — and makes the treatment work better if you still need it.
£360 — £180 for the first room plus £60 for each of the remaining three.
A four-room spider job is usually the peripheral spaces — garage, cellar, conservatory, utility — rather than living rooms and bedrooms. If you are counting bedrooms, it is worth a conversation first.
| Room | Charge | Running total |
|---|---|---|
| Room 1 | £180 | £180 |
| Room 2 | £60 | £240 |
| Room 3 | £60 | £300 |
| Room 4 | £60 | £360 |
Spider treatment is unusual among our services: the rooms that need doing are rarely the rooms people live in.
Four bedrooms is a much less common combination, and if that is what you are describing it is worth establishing whether the activity is genuinely persistent or seasonal.
See our complete service, published room prices and honest advice on when treatment helps.
View Spider Control Harrow →With spiders more than any other pest, physical measures do a large share of the work. Before committing £360, spend an afternoon on:
Then wait two weeks. A large share of enquiries resolve at this stage. If heavy activity returns quickly, treatment is warranted and will work better for the preparation.
Read nextLots of Spiders in a Harrow House – Is Treatment Needed? →If you want a permanently spider-free property, no treatment achieves that and we will not claim otherwise. What treatment gives you is a substantial reduction and a usable space.
Webbing in a customer-facing or food premises is a presentation and hygiene issue rather than a preference — a different calculation. Tell us about the premises rather than working from domestic prices.
Yes. Tell us the size — a large double garage or workshop may count differently.
Rarely. There is usually little for spiders to eat up there.
£180 plus £180 is £360 rather than £240 for two rooms together. If both need doing, together is cheaper.
Wasps in the garage as well? That one is £90 fixed cost across Harrow, guaranteed.
£360 — £180 first room plus £60 for each of the other three.
Peripheral spaces rather than living areas — garages, cellars, conservatories, utility rooms and outbuildings.
Yes. Clear all webbing and egg sacs, deal with outside lighting, seal obvious gaps, then wait two weeks.
Yes. Tell us the size — a large double garage may count differently.
Yes, occasionally. Spiders come in from outside continuously.
Rarely — there is usually little for spiders to eat.
Two rooms together is £240; two separate visits is £360.
Clear the webs and fix the lighting first. If it comes straight back, that is a real population.
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