Spider guide
Are Melbourne Spiders Dangerous? The Full Guide
A plain ranking of what is actually risky around a Melbourne house, how to separate the two species that matter from the look-alikes, and the first aid Victorian health advice recommends.
Big, obvious and harmless. The two that deserve care are small, quiet and hidden.
The question in the heading is the one people type at eleven at night with an upturned glass over something on the bathroom wall, so here is the plain version first. This city has two spiders worth genuine care, one with a reputation far worse than its medical record, and a long list of large, fast, startling species that cannot do you lasting harm. Most of the dangerous spiders people lie awake worrying about in Melbourne are not found anywhere in Victoria.
What follows ranks things rather than listing every animal with eight legs. It covers the two species that justify attention, the look-alikes behind nearly every false alarm, what current Victorian advice says to do after a bite, and the short list of jobs around a house that honestly reduce how many spiders you share it with. It sits with the rest of Tim's guides to the pests he treats, and it is written from job experience rather than from a brochure.
Two ideas are worth holding onto before the detail. A spider that is easy to spot, builds a wheel of silk across the side path and sits in the open is almost never the one to worry about, because the species that cause harm are small, shy and tucked out of sight. And a bite from something you could not identify is a reason to get medical advice, not a reason to panic. That single sentence is the most useful thing on this page.
The short answer
Are dangerous spiders common in Melbourne homes?
No. Two species around a Melbourne house are worth real care, the female redback and, at a much lower level, the white-tail, and neither of them hunts people. Everything else you commonly meet here is harmless to a healthy adult. The spiders responsible for Australia's worst bite records simply do not occur in this state.
Risk with spiders is not about size, speed or how horrible something looks scuttling across a wall. It is about venom, about how willing the animal is to use its fangs, and about whether it ends up somewhere you put your hand or your foot without looking. By that measure the pecking order around a Melbourne home is short and fairly stable from year to year.
| Level of care | Species | What that means in practice |
|---|---|---|
| Real care | Redback, female only | Venom that can make an adult very unwell. Sits in sheltered voids people reach into. Gloves and a torch solve most of it. |
| Some care | White-tail | A painful local bite that settles. Worth removing from bedding and clothing, not worth the panic it attracts. |
| Care only if provoked | Mouse spider, trapdoor | Large fangs and a nasty nip if you corner one. Both are burrow dwellers that would rather be left alone. |
| Frightening, not harmful | Huntsman, black house spider, wolf spider | Bites are uncommon and amount to local pain. The real risk is swerving the car or falling off a chair. |
| No care needed | Daddy long-legs, orb weavers, jumping spiders | Cannot hurt you. Orb weavers rebuild their web nightly in late summer and are gone by winter. |
- Medically significant
- A bite that may need treatment in hospital rather than a cold pack at home. In Victoria that term covers the female redback, and nothing else people find in a suburban yard.
Who lives in the house changes the calculation more than the species list does. Small children, people in their later years and anyone who has reacted badly to a sting before all have less margin, so the same redback behind the same pot is a different decision in a share house and in a home with a crawling toddler. The Better Health Channel guidance on reactions to bites and stings spells out which signs mean a reaction has moved past local pain and swelling, and it is worth reading once before you ever need it.
Worth knowing before you reach for a can: the spiders in the corners of a Melbourne house spend their time eating mosquitoes, flies, clothes moths and cockroaches. Clearing every web you can see is a cosmetic decision, not a safety one, which is why the sections below separate the two jobs.
The one that counts
How do you tell a redback from the spider it gets confused with?
Look for a glossy black body about the size of a pea with a red to orange band running down the back, plus a red hourglass underneath. The spider it is mistaken for, the brown house spider, has the same build and no red marking at all. If there is no red stripe anywhere, you are not looking at a redback.
This is the single most useful identification skill a Melbourne household can pick up, because it decides whether the thing under the outdoor setting is a job for gloves and a torch or a job for a dustpan. The two spiders share a body plan: a round, shiny abdomen, thin legs and an untidy web with a cone shaped retreat at one end. Side by side they are obvious. Alone in a dim shed they are not.
A mature female carries a red to orange band on the upper abdomen and a red hourglass beneath. The brown house spider is plain brown to dark grey with pale mottling and never carries red. Juvenile redbacks are paler with white marks, and the stripe comes in as they mature.
Male redbacks are tiny, brown and slender, and they are not considered a bite risk. If the spider is small, dull and spindly beside a much larger glossy one, the big one is the female and the one to deal with.
A redback web looks like it was built badly on purpose: a tangle of strong silk with a funnel at the top and sticky lines running down to the ground. It is almost always in shade, under a lip, and close to something solid.
Several smooth, round, off-white sacs hanging in the tangle are a strong sign of an established female. Finding them tells you the spider has been there a while and that more are likely nearby.
Where they turn up is the other half of the skill. Redbacks want dry shade with a firm edge to anchor silk to, and a Melbourne backyard hands them a dozen options: empty pots stacked behind the shed, the hollow steel legs of a swing set, the underside of a plastic chair nobody has moved since Easter, the inside of the letterbox, the handle recess on a wheelie bin, the gap behind a downpipe bracket, the cavity inside a brick fence and the rim of a planter box. Every one of those is a spot where a hand goes in without a look first.
- Tip the furniture over before summer rather than feeling underneath it. Chairs, tables, cushion boxes and the barbecue trolley are the four places Tim finds them most.
- Wear gloves for pots, firewood, coiled hose and anything stacked. Most redback bites happen because a hand met a web, not because a spider went looking.
- Carry a torch in daylight, because the shade inside a hollow frame or a meter box is where the web sits and your eyes will not find it otherwise.
- Check the kids' gear first, meaning the trampoline frame, the slide underside, the cubby floor and the sandpit lip, before anything else gets your attention.
Full detail on seasons, the egg cycle and how to clear a colonised courtyard sits on the redback spider guide, which goes further than this summary does.
Reputation versus record
Is a white-tail bite as bad as people say?
Almost certainly not. Victorian health advice is that a white-tail bite usually brings on itching, a small lump and swelling that fade over a few weeks. The flesh destroying ulcer story attached to this spider for decades has been examined and medical studies cannot show the link holds. Treat a bite seriously enough to get advice, and stop short of the horror stories.
It is worth being honest about why this one generates so much fear. For years a skin condition that eats away tissue was blamed on this spider in newspapers and in waiting rooms, and the name stuck long after researchers tried and failed to tie the two together. The result is households that will spend a weekend tearing a bedroom apart over a spider that would, at worst, leave them with an itchy welt.
The Better Health Channel page on spiders and spider bites is the plain source to read on this, and it is the one Tim points people to when they ring about it. Calm does not mean careless: if a bite blisters, breaks down, spreads or stops improving, that is a reason to see a doctor and have it looked at properly, exactly as you would with any wound that is heading the wrong way.
Why do white-tails keep turning up inside the house?
They hunt other spiders rather than insects, so they follow their food indoors. A house with webbing in the window frames and daddy long-legs in the corners is a stocked pantry from a white-tail's point of view. Clearing the web builders takes away the reason it came in.
Should I shake out clothes left on the floor?
Yes, and it costs nothing. White-tails rest through the day in cool dark folds, which in practice means a towel on the bathroom tiles, a shoe by the back door or the washing pile beside the bed. Most indoor bites happen when someone puts that item back on.
The longer version of this story, including what the research actually looked at and what a bite really feels like, is set out on the white-tail spider guide.
The loud one
Why does a huntsman cause so much panic and so little harm?
Because it is enormous, fast and happy to sit at eye level, which is a bad combination for the nervous system and a harmless one for the body. A huntsman has no interest in people, bites only if it is squeezed or pinned, and leaves nothing worse than a sore spot. The genuine danger is what people do in the first half second after seeing one.
Flattened body, legs angled forward like a crab, built to squeeze under bark and into the gap above a door frame.
Uncommon, defensive, and comparable to a bad splinter. Wash it, cool it, and see a doctor if anything unusual follows.
Swerving at the wheel, falling off a chair with a broom, or spraying an aerosol near a toddler for a spider that cannot hurt anyone.
They come indoors in weather, not out of malice. A huntsman lives under loose bark, inside a timber pile or behind a fascia board, and when a hot spell turns into a storm or the first cold nights arrive the roof space and the wall cavity are simply better accommodation. Add the stretch when males wander looking for a mate and you get the run of indoor sightings most Melbourne households notice in the back half of summer.
The useful response is a container and a sheet of card, done slowly, with the spider carried out to a tree rather than a bin. Killing one achieves nothing lasting, because the next one takes the vacancy within a fortnight, and squashing it on a wall near a cot or a bench is worse than the animal ever was. If huntsmen are your whole problem, the huntsman spider guide walks through getting one out of a bedroom or a car without either party getting hurt.
Nobody has ever needed a pest treatment for one huntsman. A glass, a piece of cardboard and thirty seconds of nerve will do it.
First aid
What should you do if a spider you cannot name bites you?
Victorian advice splits spider bites into two groups, and knowing which one you are in decides the first aid. For a redback and for everything else common here, wash the bite and apply something cold. For a large black burrowing spider, which in this state means a mouse spider rather than a funnel-web, the response is a pressure bandage, keeping still and triple zero.
The reason that split exists is worth one sentence. Pressure immobilisation slows venom moving through the lymph system, which matters for the group of spiders where every minute counts, and for a redback bite it does nothing useful while making the pain noticeably worse. So the wrong bandage is not neutral, it is a step backwards.
Clean the bite with soap and water, then hold a cold pack against it for roughly a quarter of an hour and put it back on if the pain builds. Do not bandage it tightly. Ring your doctor for advice, and treat escalating pain, sweating, headache or muscle cramps as a reason to go in rather than wait.
Keep the person still and calm, bandage firmly over the bite and up the limb, splint it if you can, and call triple zero. The funnel-webs that put people in hospital do not occur in this state, so group two here comes down to the mouse spider, and the response is no different.
Treatment advice is Tim's job and medical advice is not. If a bite worries you at all, ring your doctor or the Poisons Information Centre on 13 11 26, and triple zero in an emergency. Reactions vary between people, and a child, an older person or anyone with a known allergy should be assessed rather than watched. A photograph of the spider helps the staff who treat you, so take one if it is safe to do so.
Two habits remove most of the uncertainty before it starts. Keep a torch where you garden, and never put a hand into a hole, a hollow frame or a stack of anything without looking first. If a dark, bulky spider sitting in a bare hole in the lawn is what started the search, the page on whether funnel-web spiders live in Melbourne explains what you are actually looking at and why the answer is reassuring.
Sources for the first aid above are the Better Health Channel pages on first aid for bites and stings and on spiders, which are the two references Victorian households are pointed to.
What works
What actually keeps spiders out of a Melbourne house?
Take away the insects they eat, take away the shelter they rest in, and close the gaps they walk through. That means warmer outdoor globes, clear eaves and gutters, nothing stacked against the walls, flyscreens that fit, and a seasonal sweep of the places webs come back to. Spraying the lawn does none of it.
Cut the food supply
A bright white porch globe pulls moths and midges in all night and feeds whatever strings a web in the corner above it. A warm globe, or one moved away from the door, changes the whole corner within a week.
Take away the shelter
Pot stacks, firewood, bricks left over from the build, bags of mulch and the kids' bikes against the brickwork are all redback housing. Lift them, space them off the wall, and the problem thins out on its own.
Close the crossings
Hunting spiders walk in through a gap under a door, a split flyscreen, an open weep hole or a roof edge. Draught strips and a few screen repairs do more than any can of spray in the cupboard.
Sequence beats effort here. Clear the webbing first, with a broom or a pole and a bucket of soapy water, because a surface under old silk is a surface nothing reaches. Then deal with the lighting and the stacks. Then go round with a tube of sealant and a screwdriver. Households that do those three jobs in one Saturday in late spring report a very different summer from the ones who spray the fence line every fortnight.
- Sweep and rinseUnder the eaves, around window frames, along the pergola, the handrails, the meter box and the letterbox, then hose the silk off the path.
- Change the pullWarm globes, lights away from doorways, bins closed, and nothing left stacked against the house.
- Shut the doorsDraught strips, screen patches, weep hole guards and a tube of sealant around pipe entries.
Here is where honesty matters more than a sales line. That routine holds a normal suburban house at a level nobody notices. It does not hold a courtyard with redbacks nesting in the retaining wall cavities, a two storey facade whose eaves cannot be reached safely, a yard that was built or replanted last winter and arrived full of spiders, or a house where someone has already reacted badly to a bite. That is the point where a treatment earns its keep, because a residual product on the surfaces spiders actually rest on is something no retail can does well, and Tim's spider control service in Melbourne sets out what the visit covers and what it costs before you commit. Covered treatments come with the 3-month re-treatment guarantee: if those spiders reappear where he has treated inside three months, Tim returns and does the work again for nothing.
What normal looks like afterwards: webs stop being rebuilt in the treated spots within days, numbers fall over a fortnight, and you will still see the odd spider crossing a path months later. A single new web in autumn is the season doing its thing, not a failed job.
Questions
What Melbourne households ask about spiders
Which spider in Melbourne is the most dangerous?
The female redback. It is the only spider commonly found around a Melbourne house whose bite may need hospital treatment, and the only one for which an antivenom exists. It does not chase anyone, and nearly every bite follows a hand meeting a web that was never spotted, which is why gloves and a torch beat any spray on the shelf.
Are funnel-web spiders found in Victoria?
Not the ones that cause serious injury. Victorian health advice is clear that those species do not occur in this state. Other spiders here dig burrows and look the part, particularly trapdoors and mouse spiders, which is why the photographs people send Tim at midnight are almost always one of those two.
How do I keep spiders out of the house?
Remove what they eat and where they rest. Swap bright white outdoor globes for warm ones, keep eaves and gutters clear, stop stacking pots, wood and bikes against the walls, fix split flyscreens and seal the gap under external doors. A web sweep in late spring sets the whole summer up.
Should I kill every spider I find?
No, and there is a practical reason beyond kindness. House spiders eat mosquitoes, flies, moths and young cockroaches, so clearing all of them raises the insect load you notice next. Deal properly with redbacks near where people reach, move huntsmen outside, and leave the corner dwellers alone.
What if something bit me and I never saw the spider?
Wash it, cool it with a cold pack and ring your doctor, or the Poisons Information Centre on 13 11 26, for advice. Do not apply a tight bandage unless the bite came from a large black burrowing spider. Get seen promptly if pain builds, if you feel generally unwell, or if the person bitten is very young or elderly.
Is a spider treatment worth paying for if nothing here is deadly?
It depends what is bothering you. One huntsman a month is not worth a booking and Tim will say so. Redbacks established through a courtyard, webbing returning across a two storey facade, or a household with a bad reaction history are all worth treating, because those situations do not resolve with a broom.
Not sure what you found in the shed?
Send a photo with your suburb and Tim will name it, tell you honestly whether it needs anything done, and price the job before it goes in the diary.
Reviewed October 2026 by Tim, licensed Victorian pest control operator, licence No. 86488. Spider and bite information: Better Health Channel, spiders and Better Health Channel, bites and stings first aid. This page is general information and is not medical advice.