Spiders & flies · Auckland-wide

Spider and Fly Control Auckland

Spider and fly control for Auckland homes: exterior spider spray, interior treatment, cluster flies and house flies. From $180 incl. GST. Free estimate.

Species identified before anything is treated
Typical cost $180 – $380 incl. GST — quoted up front
Written record of products used and where they went

09 925 0448 Get a free estimate

Trained & insured techniciansUrban pest management, applied to label

Usually within 2–4 working daysUrgent jobs prioritised where we can

Pet & child-conscious methodsEPA-approved products, targeted placement

Written record every visitWhat was used, where, and what to seal

Spider and fly control in Auckland: the short answer

Spider and fly control in Auckland typically costs $180 to $380 including GST: an exterior spider spray from about $180, and up to $380 when the interior and garage are treated as well. The exterior work is a residual insecticide on the eaves, soffits, window frames, doors, fences and decks, where webs build up. Spiders follow their food, so the lights, gardens and bins that draw insects to a house also draw spiders, which is why fly and insect control and spider control belong together. Most spiders around Auckland homes are harmless to people. The two that matter medically in New Zealand, the katipō and the redback, are rarely found around houses here. See which NZ spiders are dangerous.

Signs to look for

Signs you need spider or fly control

Webs rebuilt around window frames, eaves and outdoor lights within a few days of being cleared
More spiders indoors from late summer into autumn, including white-tails found at night in bathrooms, bedding or clothes left on the floor
Clusters of slow, dozy flies on sunny windows in autumn and again on warm days in late winter and spring: the pattern of cluster flies
Round, silky egg sacs in ceiling corners, behind furniture and in garages and sheds
Flies gathering around bins, compost, drains or where pets toilet, which points to breeding close by
Tiny flies around the fruit bowl or the sink that come back within days of cleaning

If any of these sound familiar, describe what you have noticed when you call — where it is, when it started and what you have seen. You do not need to identify anything yourself. Call 09 925 0448 or request an estimate online.

Get a free estimate

Tell us what is going on. We will come back with a firm price, usually the same day.

No call-out fee · No obligation

Know what you have

Spiders and flies in Auckland homes

Two house spiders make most of the webs, one wandering spider causes most of the worry, and four kinds of fly account for nearly every fly call. Knowing which you have decides where the treatment goes: the outside of the house for webs, the roof void for cluster flies, the kitchen and drains for small flies.

White-tail spider

Lampona cylindrata and L. murina: introduced from Australia

A slender, dark grey spider with banded legs and a pale tip on its cigar-shaped abdomen, with a body up to about 17 mm long. It builds no catching web. It hunts other spiders at night, especially grey house spiders, and ends up indoors in clothing, towels and bedding. Bites are painful but usually minor, and Health New Zealand says they do not cause skin ulcers. Read more on white-tail spider bites.

Grey and black house spiders

Badumna longinqua and B. insignis

These are the spiders behind the messy, lacy webs in the corners of window frames, under the eaves, on fences and even on car mirrors. The grey house spider has a body about 15 mm long and sits in a retreat at the back of its web, waiting for blowflies, house flies and moths. Webs that reappear within days of being brushed off are the main reason people book an exterior spider spray, and removing these spiders also removes the white-tails' food.

Flies: house, cluster and fruit flies

Musca domestica, Pollenia spp. and Drosophila spp.

House flies and blowflies breed in rubbish, compost and pet waste, and come indoors from outside. Cluster flies are sluggish, dark flies whose larvae live in earthworms; in autumn the adults move into roof voids and wall cavities to spend the winter, then crawl out on warm days. Fruit flies, properly vinegar flies, breed in overripe fruit and damp kitchen waste. Our guide covers why you suddenly have flies in the house.

Our method

How we treat spiders and flies

Every job follows the same sequence, because skipping a step is how treatments end up being repeated at your expense.

Inspection
We identify the spiders and flies involved, find where they shelter, and work out where their food is coming from: outdoor lights, gardens, bins, compost and drains. For flies, the breeding source matters more than the adults you can see. We also note any gaps around windows, doors, vents and the roofline that let them in.
Exterior residual treatment
A residual insecticide goes on the surfaces spiders use and insects land on: eaves and soffits, window and door frames, fences, decks, pergolas and the garage. It keeps working after it dries, commonly for several months, though rain, direct sun and water-blasting shorten that. Webs are best brushed off a few days after treatment, once the spiders have contacted the surface.
Interior treatment where needed
Inside, treatment is targeted rather than sprayed across living areas: skirtings, ceiling corners, the garage, and the places where cluster flies and spiders get into the roof void. Cluster flies sheltering in a roof void or wall cavity are treated at their entry points, and we tell you what to seal. Pets, children and fish tanks are planned around.
Fly source control
Spraying flies without removing the breeding source gives a few quiet days, then more flies. We point out the sources, such as bin lids, compost, pet waste and drains, and recommend fly screens where doors and windows stay open. In commercial kitchens we add bait stations and UV insect light traps placed away from food preparation.
Prevention and timing
Spider numbers climb through summer and peak as males wander in late summer and autumn, so late summer is the most useful time for an exterior treatment, with a spring follow-up where webs return quickly. We advise on outdoor lighting, since warmer yellow bulbs draw fewer insects, and on a sensible re-treatment interval, usually once or twice a year.

Spider & Fly Control treatment in progress

Pricing

How much spider and fly control costs in Auckland

Typical range for this service is $180 – $380 including GST. We quote before we start, and the price we give you is the price you pay unless the job turns out to be materially different from what was described on the phone.

What moves the price: property size and access, how far the infestation has progressed, whether roof or subfloor work is needed, and whether follow-up visits are required to complete the job properly.

See the full cost guide

Typical cost: $180 – $380 incl. GST
Call-out fee: None
Typical wait: 2–4 working days
Follow-up: Included where the pest requires one
Coverage: Wider Auckland region
Documentation: Written record of products and placements

Where we work

Spider & Fly Control across Auckland

Spider pressure is highest on bush-edge and coastal sections, where the garden supplies a steady stream of insects and new spiders: much of the North Shore, West Auckland and the Waitākere fringe around Henderson. Cluster flies are worst in older homes with roof voids near open grass and pasture.

Guides on this pest

White-Tail Spiders in NZ: What a Bite Really Does, and How to Keep Them Out · 10 min read
New Zealand Spiders: An Identification Guide, and Which Ones Are Dangerous · 12 min read
How to Get Rid of Spiders in NZ: The Best Time to Spray, and What Actually Works · 9 min read
Flies in the House: Why They Appear Suddenly, and How to Get Rid of Each Kind · 10 min read

All pest advice guides →

Questions

Spider and fly control: questions people ask

How much does spider spraying cost in Auckland?

An exterior spider spray on a typical Auckland home costs from about $180 including GST, and a combined interior and exterior treatment up to about $380. Large or two-storey homes, cluster fly treatment in a roof void and commercial fly management are quoted after we have seen the property, because access and area change the job. Our cost guide lists the other services.

Can pest control get rid of spiders?

It can clear most of the spiders living on and around the house and stop the webs building up for months. It cannot stop new spiders arriving from the garden, the neighbours or the bush, and we will not pretend otherwise. That is why the residual matters, and why reducing the insects that spiders eat, through lighting, bins and screens, makes a treatment last longer.

Why do I suddenly have so many spiders?

Usually the season. Spider numbers rise through the warmer months along with the insects they eat, and from late summer into autumn many male spiders reach maturity and leave their webs to look for females, which brings them indoors. A new outdoor light, a pile of stored boxes, or a flush of insects after warm, damp weather can add to it.

What is the best time of year to spray for spiders in NZ?

Late summer, before the autumn peak, is the most useful time for an exterior treatment, with a follow-up in spring if webs return quickly. Choose a dry, still day with no rain forecast for the rest of the day so the spray can dry. Our guide on how to get rid of spiders yourself covers timing, products and what does not work.

Is spider spray safe for pets and children?

The products we use are approved for this use in New Zealand and applied to label directions, mostly outside. Keep children and pets off treated surfaces until they are dry, usually a few hours, cover fish tanks and turn off their pumps if we treat indoors, and tell us about anyone with asthma or allergies. Our guide to pest control safety around pets and children goes further.

Why are there so many flies in my house all of a sudden?

The kind of fly tells you why. Slow, dozy flies on sunny windows in autumn are cluster flies coming out of the roof or walls. Flies around the bins or the back door point to something breeding nearby, such as rubbish, compost or pet waste. Tiny flies at the fruit bowl or sink are vinegar flies or drain flies. A sudden burst of large blowflies indoors can mean a dead rat or bird in a wall or roof space.

Do you treat cluster flies?

Yes. Cluster flies spend the winter in roof voids and wall cavities, often in the same house year after year, and they cannot be swatted away because they are hidden in the structure. We treat the exterior walls and eaves they land on before they move in, treat the roof void entry points, and tell you which gaps to seal. Cluster fly roof treatments are quoted after an inspection.

Do you kill katipō?

No. The katipō is a native spider that has declined in number and is absolutely protected under the Wildlife Act. It lives in coastal sand dunes, under driftwood and dune grasses, and is rarely found around Auckland homes. If you see one on the beach, leave it alone and keep your distance. Our treatments target the common spiders on and around houses.

More services

Other pest control services

References and further reading

Written and reviewed by the Pest Control Auckland technical team. Last reviewed 24 September 2026.

Need spider & fly control in Auckland?

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